MYCOLIC DR 180

Indications

• Dry eye conditions
• Tear deficiency
• Keratoconjunctivitis sicca

Dosage

Children: Apply as required, typically in the form of eye drops.

Adults: Apply as required, typically in the form of eye drops.

Mechanism of action

Hypromellose acts by forming a viscous gel upon contact with the ocular surface, which helps to retain moisture and protect against irritants. This gel-like property enhances the stability of the tear film and reduces evaporation, thereby alleviating symptoms associated with dry eye conditions.

Pharmacodynamics

The pharmacodynamic effects of hypromellose are primarily related to its ability to mimic natural tears, providing lubrication to the ocular surface. This lubrication reduces friction during blinking and maintains corneal hydration, which is critical for ocular comfort and health. Its high viscosity also contributes to prolonged retention time on the eye surface.

Pharmacokinetics

Hypromellose is administered topically as eye drops and is not significantly absorbed systemically. The retention time of hypromellose on the ocular surface is enhanced due to its viscosity, allowing for extended relief of dry eye symptoms. The elimination of hypromellose occurs primarily through drainage from the eye and dilution by the natural tear fluid.

Adverse effects

• Temporary visual disturbance
• Eye irritation

Precautions

• Should not be used during contact lens wear
• Use with caution in patients with known hypersensitivity to any component of the formulation

Pregnancy

Hypromellose is generally considered safe for use during pregnancy. However, it should be used only if clearly needed and after consulting a healthcare provider.

Breast-feeding

Hypromellose is unlikely to affect breastfed infants when used as directed, but consultation with a healthcare provider is advisable.

Storage

Store in a cool, dry place away from direct sunlight. Once opened, use within a specified period as indicated on the packaging.

Formulations

• {'name': 'Teardew', 'concentration': '0.3%', 'form': 'eye drops', 'volume': '10 ml'}
• {'name': 'Xailin Hydrate', 'concentration': '0.3%', 'form': 'eye drops', 'volume': '10 ml'}
• {'name': 'AacuLose', 'concentration': '0.3%', 'form': 'eye drops', 'volume': '10 ml'}
• {'name': 'Artelac', 'concentration': '0.32%', 'form': 'eye drops', 'volume': '10 ml'}
• {'name': 'Lacrilube', 'concentration': '2 mg/g', 'form': 'eye ointment', 'volume': '3.5 g'}
• {'name': 'Celluvisc', 'concentration': '1%', 'form': 'eye drops', 'volume': '0.4 ml unit dose'}

Indications

• Skin disinfection
• Preparation of skin before injections
• Cleansing minor wounds

Dosage

Children: Apply to the skin as required; consult product literature for specific guidance.

Adults: Apply to the skin as required for disinfection.

Mechanism of action

Alcohol exerts its antiseptic effect by denaturing proteins, disrupting cell membranes, and dehydrating microbial cells, leading to cell lysis and death.

Pharmacodynamics

Alcohol has broad-spectrum antimicrobial activity, effective against bacteria, fungi, and viruses. Its efficacy is influenced by concentration, with higher concentrations generally being more effective.

Pharmacokinetics

Alcohol is rapidly absorbed through the skin and mucous membranes. It is metabolized primarily in the liver, with a half-life that varies based on the individual's metabolic rate and the amount consumed.

Contra-indications

• Concomitant use with lithium
• Regular use in neonates
• Patients with severe burns when diathermy has been preceded by application of alcoholic skin disinfectants

Adverse effects

• Eye erythema
• Punctate keratitis
• Cytotoxicity
• Eye discolouration

Interactions

• Increases risk of visual disturbances with antiepileptics
• Increases concentration with methylphenidate
• Increases risk of facial flushing and skin irritation with topical pimecrolimus
• Increases concentration with retinoids
• Increases concentration with acitretin
• Increases risk of facial flushing and skin irritation with topical tacrolimus
• Decreases antidiuretic effect with vasopressin

Precautions

• Avoid regular application to inflamed or broken skin or mucosa
• Avoid broken skin
• Flammable

Pregnancy

Sufficient iodine may be absorbed to affect the fetal thyroid in the second and third trimester.

Breast-feeding

Avoid regular or excessive use.

Storage

Store in a cool, dry place away from heat and direct sunlight.

Formulations

• Betadine 2.5% dry powder spray
• Industrial methylated spirit
• Povidone-Iodine 25 mg per 1 gram

Mechanism of action

Acetone acts as a solvent and is utilized in various biochemical pathways. It participates in the biosynthesis of isopropanol and is involved in the degradation pathways where it converts into other metabolites such as methylglyoxal and acetoacetate. It also plays a role in pyruvate fermentation and is integral to the fermentation processes in Clostridium acetobutylicum.

Pharmacodynamics

Acetone has a low molecular weight and is highly volatile, which allows it to penetrate biological membranes easily. Its pharmacological effects are primarily due to its role as a solvent and its ability to influence metabolic processes. Acetone can affect lipid metabolism and may impact energy homeostasis by influencing the balance between fat and carbohydrate utilization.

Pharmacokinetics

Acetone is rapidly absorbed through inhalation and dermal exposure. It is distributed throughout the body and can cross the blood-brain barrier. Metabolism occurs primarily in the liver where acetone is converted into acetoacetate and other metabolites. The elimination of acetone occurs mainly through renal excretion, with a half-life varying based on the route of exposure and individual metabolism.

Pregnancy

Acetone is classified as a pregnancy category C drug. Its effects during pregnancy are not well-studied, and caution should be exercised.

Breast-feeding

There is limited information on the excretion of acetone in breast milk. Caution is advised when using acetone during breastfeeding.

Storage

Store in a cool, dry place, away from heat and direct sunlight. Keep tightly closed in original container.

Dosage

Children: Refer to specific guidelines or literature for dosing information.

Adults: Refer to specific guidelines or literature for dosing information.

Pregnancy

Consult healthcare professionals before use. Safety during pregnancy is not well established.

Breast-feeding

Consult healthcare professionals before use. Safety during breastfeeding is not well established.

Storage

Store in a cool, dry place away from direct sunlight.

Indications

• Hypovolemic shock
• Severe burns
• Postoperative fluid replacement
• Sepsis
• Trauma management

Dosage

Children: Refer to established guidelines for specific dosing, as it varies based on the type of colloidal solution used and the clinical condition being treated.

Adults: Refer to established guidelines for specific dosing, as it varies based on the type of colloidal solution used and the clinical condition being treated.

Mechanism of action

Colloidal solutions work by maintaining oncotic pressure in the blood, thus helping to retain fluid within the vascular system. This is primarily due to the large molecular weight of the colloidal particles, which cannot easily pass through capillary walls. The presence of colloids in the blood helps to draw water into the circulation, increasing blood volume and improving tissue perfusion.

Pharmacodynamics

The pharmacodynamics of colloidal solutions are centered on their ability to exert osmotic pressure, which helps maintain blood volume and pressure. This effect is particularly important in conditions such as hypovolemia and shock, where fluid replacement is necessary to restore hemodynamic stability. The efficacy of colloidal solutions can vary depending on the type of colloid used, as well as the underlying clinical condition being treated.

Pharmacokinetics

Colloidal solutions are typically administered intravenously and their pharmacokinetics can vary based on the specific formulation. Generally, colloids are distributed throughout the vascular compartment and have a longer duration of action compared to crystalloids, as they remain in circulation longer. The elimination of colloids is primarily through the reticuloendothelial system, where they are metabolized or eliminated by the liver and spleen. Factors such as particle size and composition can influence their distribution and clearance.

Adverse effects

• Allergic reactions
• Injection site reactions
• Nausea
• Vomiting
• Headache
• Fever

Precautions

• Use with caution in patients with known allergies to any component of the formulation
• Monitor for signs of hypersensitivity during administration
• Consider volume overload in patients with cardiac or renal impairment

Pregnancy

The safety of colloidal solutions during pregnancy has not been established. Use only if the potential benefit justifies the potential risk to the fetus.

Breast-feeding

It is not known whether colloidal solutions are excreted in human milk. Caution should be exercised when administering to breastfeeding mothers.

Storage

Store at room temperature, protect from light, and do not freeze. Keep out of reach of children.

Formulations

• Colloidal silver
• Colloidal gold
• Colloidal iron
• Other metal colloids

Indications

• Used as a disintegrant in solid dosage forms
• Improves dissolution rate of active ingredients

Dosage

Children: Refer to specific product information or formulation guidelines as dosages can vary based on formulation and intended use.

Adults: Refer to specific product information or formulation guidelines as dosages can vary based on formulation and intended use.

Mechanism of action

Crospovidone acts by absorbing water and swelling, which leads to the disintegration of the tablet or capsule material. This process increases the surface area of the active ingredient, promoting faster dissolution and absorption in the gastrointestinal tract.

Pharmacodynamics

The pharmacodynamic properties of crospovidone are primarily related to its function as a disintegrant. By rapidly breaking down the dosage form upon contact with moisture, it allows for quicker release of the active ingredient. This mechanism is crucial for enhancing the bioavailability of poorly soluble drugs, thereby improving therapeutic efficacy.

Pharmacokinetics

Crospovidone is not absorbed systemically when administered orally, as it remains in the gastrointestinal tract. It is excreted unchanged in the feces. Due to its nature as an excipient, its pharmacokinetic profile is not typically characterized in the same manner as that of active pharmaceutical ingredients.

Adverse effects

• Allergic reactions
• Skin irritation
• Gastrointestinal disturbances

Precautions

• Use with caution in patients with known hypersensitivity to povidone or other related compounds
• Avoid contact with eyes, as it may cause irritation

Pregnancy

Safety in pregnancy has not been established. Use only if clearly needed.

Breast-feeding

It is not known whether crospovidone is excreted in human milk. Use with caution.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Formulations

• Powder for oral solution
• Tablet

Indications

• Mild to moderate dehydration
• Severe dehydration
• Electrolyte imbalances
• Diarrhea and vomiting
• Heat-related illnesses

Dosage

Children: Pediatric doses for rehydration should be guided by the severity of dehydration and the specific recommendations found in the BNF for Children. Generally, oral rehydration solutions are recommended, with adjustments based on age and weight.

Adults: The dosage for adults typically involves oral rehydration solutions containing specific electrolyte concentrations. For severe cases, intravenous fluids may be administered under medical supervision, with the type and rate depending on clinical evaluation.

Mechanism of action

Rehydration therapies work primarily by restoring fluid balance and supplying necessary electrolytes, such as sodium and potassium, to the body. Oral rehydration solutions contain specific concentrations of salts and sugars that enhance water absorption in the intestines, promoting faster recovery from dehydration.

Pharmacodynamics

The pharmacodynamic effects of rehydration solutions are primarily to correct fluid and electrolyte imbalances. By providing an appropriate osmotic gradient, these solutions facilitate the absorption of water and electrolytes from the gastrointestinal tract into the bloodstream, thus replenishing lost fluids and restoring normal physiological function.

Pharmacokinetics

The pharmacokinetics of rehydration solutions depend on their composition. Oral rehydration solutions are rapidly absorbed in the intestines, with peak plasma concentrations of electrolytes generally achieved within 1 to 2 hours after administration. Intravenous fluids can have immediate effects, restoring intravascular volume and improving circulation almost instantly, depending on the type and rate of infusion.

Pregnancy

Dehydration can pose risks during pregnancy, including reduced amniotic fluid and impaired fetal development. Proper hydration is essential.

Breast-feeding

Maintaining hydration is crucial for breastfeeding mothers, as dehydration can affect milk production.

Storage

Dehydrated substances should be stored in a cool, dry place, away from moisture to prevent rehydration.

Indications

• Monitoring respiratory function
• Assessment of metabolic status
• Management of respiratory acidosis
• Management of respiratory alkalosis

Dosage

Children: Dosing for interventions related to carbon dioxide levels in pediatric patients should be guided by clinical protocols and the BNF for Children.

Adults: Dosing for interventions related to carbon dioxide levels is typically based on clinical assessment and individual patient needs. Refer to clinical guidelines for specific scenarios.

Mechanism of action

Carbon dioxide acts primarily as a signaling molecule in the body, influencing respiratory drive and blood pH. It is produced during cellular respiration and is a critical component of the bicarbonate buffering system, which helps maintain acid-base homeostasis. Elevated levels of CO2 in the blood stimulate ventilation in the lungs, increasing the rate of gas exchange and facilitating the removal of excess CO2.

Pharmacodynamics

The pharmacodynamic effects of dioxides, particularly carbon dioxide, are closely related to its concentration in the blood. As CO2 levels increase, it leads to respiratory acidosis, which can stimulate the respiratory centers in the brain to increase ventilation. Conversely, low levels of CO2 can cause respiratory alkalosis, potentially leading to decreased respiratory drive. CO2 also plays a role in vasodilation and can affect blood flow and pressure through its influence on smooth muscle tone.

Pharmacokinetics

Carbon dioxide is produced endogenously during metabolic processes and is transported in the bloodstream primarily in three forms: dissolved in plasma, as bicarbonate ions (HCO3-), and bound to hemoglobin. The half-life of CO2 in the bloodstream is very short due to its rapid exchange with alveolar gas in the lungs. The elimination of CO2 occurs through exhalation, making it a dynamic component of respiratory physiology.

Pregnancy

Data on the effects of dioxide during pregnancy are limited. Caution is advised due to potential risks associated with exposure.

Breast-feeding

Limited data are available regarding the excretion of dioxide in human milk. Caution is recommended.

Storage

Store in a cool, dry place, away from direct sunlight and moisture.

Indications

• Wound healing
• Skin ulceration
• Burns
• Psoriasis
• Dermatitis

Dosage

Children: Refer to the BNF for Children for appropriate dosing information based on the child's age and condition.

Adults: Refer to the BNF for specific formulations and dosing guidelines, as dosages may vary based on the condition being treated and the formulation used.

Mechanism of action

While there is no well-controlled data to formally substantiate the method of action, ongoing studies suggest that allantoin may induce a histological wound healing profile in animal models, leading to improved reestablishment of normal skin. This includes increased vasodilation, inflammatory cell presence, angiogenesis, fibroblast proliferation, and collagen deposition in treated wounds compared to untreated ones.

Pharmacodynamics

There is limited controlled data regarding the pharmacodynamic properties of allantoin. However, studies indicate that allantoin may possess moisturizing and keratolytic effects, increasing the extracellular matrix's water content and enhancing the desquamation of dead skin cells. These activities can promote cell proliferation and facilitate wound healing.

Pharmacokinetics

Specific pharmacokinetic data for allantoin in humans is limited. However, it is known to be applied topically, which suggests local absorption at the site of application. Systemic absorption is considered minimal due to its low molecular weight and hydrophilicity.

Pregnancy

There is limited data on the safety of allantoin in pregnancy. It is advisable to consult a healthcare professional before use.

Breast-feeding

Allantoin is generally considered safe during breastfeeding, but caution is recommended. Consult a healthcare professional before use.

Storage

Store at room temperature, away from direct sunlight and moisture. Keep out of reach of children.

Formulations

• Topical cream
• Gel
• Ointment

Indications

• Antiseptic for skin disinfection
• Solvent in pharmaceutical formulations
• Cleaning agent in laboratories and healthcare settings

Dosage

Children: For pediatric use, consult specific guidelines in the BNF for Children, as dosing may vary based on age, weight, and clinical circumstances.

Adults: For skin antisepsis, apply isopropyl alcohol topically in a concentration of 70% to the affected area. Dosage may vary based on clinical indication and setting.

Mechanism of action

Isopropyl alcohol works primarily as an antiseptic by denaturing proteins and disrupting cell membranes of bacteria, viruses, and fungi, leading to cell lysis and death. Its efficacy is enhanced by the presence of water, which facilitates the penetration of the alcohol into microbial cells.

Pharmacodynamics

Isopropyl alcohol exhibits a rapid onset of action against a variety of pathogens, including gram-positive and gram-negative bacteria, fungi, and some viruses. Its antimicrobial activity is concentration-dependent, with higher concentrations generally providing a broader spectrum of activity. It is commonly used in concentrations ranging from 60% to 90%, with 70% being optimal for disinfection due to its ability to penetrate the cell wall effectively.

Pharmacokinetics

Isopropyl alcohol is readily absorbed through the skin and mucous membranes. After absorption, it is metabolized primarily in the liver to acetone, which is then further metabolized and excreted, mostly via urine. The elimination half-life of isopropyl alcohol varies but is typically around 2 to 3 hours. Its effects can be influenced by factors such as dosage, route of exposure, and individual metabolic differences.

Pregnancy

Isopropyl alcohol should be used with caution during pregnancy. It is a category C drug, indicating that risk cannot be ruled out.

Breast-feeding

Caution is advised when using isopropyl alcohol during breastfeeding, as it is not known if it is excreted in human milk.

Storage

Isopropyl alcohol should be stored at room temperature, away from heat and flame. Keep the container tightly closed and in a well-ventilated area.

Formulations

• Isopropyl alcohol 70% solution
• Isopropyl alcohol 99% solution

Indications

• Lactose intolerance
• As a filler or excipient in pharmaceutical formulations

Dosage

Children: Refer to the BNF for Children for specific dosing information based on age and clinical context.

Adults: Refer to the BNF for specific dosing information based on clinical context.

Mechanism of action

Lactose is metabolized in the intestine by the enzyme lactase into its constituent monosaccharides, glucose and galactose. In individuals with lactase deficiency, unabsorbed lactose passes into the colon, where it is fermented by bacteria, leading to gas production and osmotic effects that contribute to diarrhea.

Pharmacodynamics

The pharmacodynamics of lactose are primarily related to its effects on gastrointestinal function. In healthy individuals, lactose is effectively broken down into glucose and galactose, which are absorbed and utilized for energy. In individuals with lactose intolerance, the unabsorbed lactose can cause osmotic diarrhea and colonic fermentation, leading to discomfort and symptoms associated with lactose intolerance.

Pharmacokinetics

Lactose is not absorbed in the gastrointestinal tract until it is hydrolyzed into glucose and galactose by lactase. The absorption of glucose and galactose occurs in the small intestine. The half-life is not applicable as lactose is not typically administered as a medication but is rather ingested as a natural component of food. Its metabolism primarily occurs in the intestine.

Adverse effects

• Bloating
• Diarrhea
• Abdominal pain
• Flatulence

Precautions

• Use with caution in patients with lactose intolerance.
• Consider potential for gastrointestinal upset in sensitive individuals.

Pregnancy

Lactose is generally considered safe for use during pregnancy. However, consult a healthcare professional for individual advice.

Breast-feeding

Lactose is safe to use while breastfeeding, as it is a natural sugar present in breast milk.

Storage

Store in a cool, dry place, away from direct sunlight.

Formulations

• Powder
• Granules
• Tablets
• Syrup

Indications

• Nutritional support
• Source of carbohydrates
• Dietary fiber source
• Animal feed

Dosage

Children: As with adults, there are no specific dosing recommendations for maize for children. It can be introduced into the diet in age-appropriate forms and quantities, keeping in mind the overall dietary balance.

Adults: There are no specific dosing recommendations for maize as it is typically consumed as part of a balanced diet. It can be included in daily meals in various forms such as whole kernels, flour, or as part of dishes.

Mechanism of action

Maize primarily acts as a source of energy due to its high carbohydrate content. The complex carbohydrates in maize are broken down into glucose, which is then utilized by the body for energy production. It also contributes to dietary fiber intake, which can aid in digestive health and regulation of blood sugar levels.

Pharmacodynamics

The consumption of maize influences blood glucose and insulin levels due to its carbohydrate content. It has a relatively low glycemic index when consumed in whole form, which can help in managing blood sugar levels. The dietary fiber present in maize can also promote satiety and aid in weight management.

Pharmacokinetics

The digestion of maize begins in the mouth with salivary amylase breaking down starches into simpler sugars. In the stomach and small intestine, enzymes further break down these carbohydrates. The resultant glucose is absorbed into the bloodstream, where it is transported to cells for energy production. The absorption rate can vary based on the form of maize consumed (e.g., whole kernels versus processed forms).

Pregnancy

Maize is generally considered safe for consumption during pregnancy as it is a staple food and provides essential nutrients.

Breast-feeding

Maize is safe to consume while breastfeeding and can provide important nutrients to both the mother and the infant.

Storage

Store in a cool, dry place, away from moisture and pests. Properly sealed containers can help prolong shelf life.

Formulations

• Whole maize grains
• Maize flour (cornmeal)
• Maize starch
• Maize oil

Indications

• Prophylaxis of organ rejection in kidney transplantation
• Prophylaxis of organ rejection in heart transplantation
• Prophylaxis of organ rejection in liver transplantation
• Treatment of systemic lupus erythematosus
• Treatment of rheumatoid arthritis

Dosage

Children: Refer to BNF for Children for specific dosing guidelines.

Adults: Refer to BNF for specific dosing guidelines.

Mechanism of action

Mycophenolic acid exerts its effects primarily by inhibiting inosine monophosphate dehydrogenase (IMPDH), which is crucial in the de novo pathway of purine synthesis. This leads to decreased lymphocyte proliferation, particularly affecting T and B lymphocytes, which rely heavily on this pathway for their proliferation and function.

Pharmacodynamics

The inhibition of IMPDH results in reduced synthesis of purines, which are essential for the proliferation of lymphocytes. This immunosuppressive action helps to prevent graft rejection in transplant patients and controls autoimmune conditions. Mycophenolate mofetil (MMF), a prodrug of mycophenolic acid, is often used due to its enhanced bioavailability and safety profile.

Pharmacokinetics

Mycophenolic acid is rapidly absorbed after oral administration, with peak plasma concentrations occurring approximately 1 to 2 hours post-dose. It is extensively metabolized in the liver, primarily to its active form, mycophenolic acid. The drug has a half-life of approximately 16 to 18 hours, and its elimination is predominantly via the renal route. Dosing adjustments may be necessary in patients with renal impairment.

Contra-indications

• Hypersensitivity to mycophenolate mofetil or any component of the formulation
• Pregnant women, due to the risk of teratogenicity
• Active infections, particularly viral infections such as cytomegalovirus (CMV)

Adverse effects

• Gastrointestinal disturbances such as nausea, vomiting, and diarrhea
• Increased risk of infections due to immunosuppression
• Bone marrow suppression leading to leukopenia and thrombocytopenia
• Elevated liver enzymes
• Renal impairment

Interactions

• Antacids and cholestyramine may reduce absorption of mycophenolate
• Concomitant use with other immunosuppressants increases the risk of infections and malignancies
• Certain antibiotics, such as rifampicin, may affect mycophenolate metabolism

Precautions

• Monitor white blood cell counts regularly due to the risk of leukopenia
• Assess for signs of infection, especially in patients on long-term therapy
• Use caution in patients with a history of gastrointestinal disorders
• Avoid pregnancy during treatment and provide effective contraception

Pregnancy

Mycophenolate is contraindicated in pregnancy due to significant risks of fetal malformations and pregnancy loss. Women of childbearing potential must use effective contraception during treatment.

Breast-feeding

Mycophenolate is excreted in breast milk; caution is recommended when administering to breastfeeding mothers as potential adverse effects on the infant are possible.

Storage

Store at room temperature, away from moisture and light. Keep out of reach of children.

Formulations

• Mycophenolate mofetil capsules
• Mycophenolate mofetil tablets
• Mycophenolate mofetil oral suspension

Indications

• Coloring agent in pharmaceuticals
• Improving the appearance of drug formulations
• Enhancing the identification of medications

Dosage

Children: Refer to specific formulation guidelines and product information for dosing details, as Opacode is used as an excipient and not administered directly.

Adults: Refer to specific formulation guidelines and product information for dosing details, as Opacode is used as an excipient and not administered directly.

Mechanism of action

The specific mechanism of action of Opacode is not well-defined as it primarily acts as an excipient rather than an active pharmaceutical ingredient. Its function is largely physical, influencing the aesthetic properties of drug formulations without pharmacological activity.

Pharmacodynamics

As an excipient, Opacode does not exhibit pharmacodynamic properties in the traditional sense. Its role is to provide color and opacity to drug products, which can aid in patient compliance by making medications easier to recognize. The pharmacodynamic impact of Opacode is limited to its contribution to the overall formulation.

Pharmacokinetics

Opacode is not absorbed systemically as it is used in solid dosage forms, where it remains in the gastrointestinal tract until excretion. Its pharmacokinetic profile is not applicable as it does not have therapeutic effects or bioavailability in the body.

Pregnancy

There is limited information on the safety of Opacode during pregnancy. It is advisable to use this drug only if the potential benefit justifies the potential risk to the fetus.

Breast-feeding

The effects of Opacode during breastfeeding are not well studied. Caution is recommended when administering to nursing mothers.

Storage

Store in a cool, dry place, away from direct sunlight. Keep out of reach of children.

Indications

• Tablet coating
• Granule coating
• Improvement of drug stability
• Taste masking
• Aesthetic enhancement of pharmaceuticals

Dosage

Children: Dosage will depend on the specific formulation and active ingredients of the medication being coated. Refer to the specific product information for guidance.

Adults: Dosage will depend on the specific formulation and active ingredients of the medication being coated. Refer to the specific product information for guidance.

Mechanism of action

Opadry functions primarily as a coating polymer that adheres to the surface of tablets or granules, creating a protective layer. This layer can control the release of the active ingredient and protect it from environmental factors such as moisture and light. The specific composition of Opadry can vary, but it typically includes film-forming agents, plasticizers, and colorants that work together to achieve the desired coating characteristics.

Pharmacodynamics

The pharmacodynamics of Opadry is largely focused on its physical and chemical properties rather than specific biological interactions. The coating alters the dissolution characteristics of the drug, potentially leading to modified release profiles. This can enhance drug bioavailability or control the release rate of the active ingredient, thereby impacting the therapeutic effect.

Pharmacokinetics

As a coating agent, Opadry itself is not absorbed into the systemic circulation and does not have pharmacokinetic properties related to absorption, distribution, metabolism, or excretion of an active pharmaceutical ingredient. Its impact on pharmacokinetics is indirect, as it affects how the active drug is released and absorbed in the gastrointestinal tract.

Pregnancy

Opadry is a film-coating agent, and specific studies on its effects during pregnancy are not well-documented. Generally, it is advisable to use medications cautiously during pregnancy. Consult a healthcare provider for guidance.

Breast-feeding

Limited data are available regarding the safety of Opadry during breastfeeding. It is recommended to consult a healthcare provider before use.

Storage

Store in a cool, dry place away from direct sunlight and moisture. Keep out of reach of children.

Formulations

• Opadry OY - a coating system for oral solid dosage forms
• Opadry II - a polymer-based coating system for tablet and capsule applications

Dosage

Children: Dosage information for phthalates is not applicable, as they are not intended for therapeutic use in pediatrics.

Adults: Dosage information for phthalates is typically not specified as they are not used therapeutically but rather as industrial chemicals.

Mechanism of action

Phthalates primarily act as plasticizers by interfering with the polymerization process of PVC and other materials. They also have been shown to affect hormone signaling pathways, particularly those involving steroid hormones. The degradation pathways of phthalates in biological systems involve various enzymatic processes, leading to their conversion into less harmful metabolites.

Pharmacodynamics

Phthalates exhibit a range of pharmacodynamic effects, particularly concerning their role as endocrine disruptors. They can bind to hormone receptors, influencing the synthesis and activity of hormones such as testosterone and estrogen. This can lead to developmental and reproductive toxicity, as well as potential impacts on metabolic processes.

Pharmacokinetics

Phthalates are rapidly absorbed in the gastrointestinal tract, and their distribution varies based on their molecular weight and chemical structure. They are metabolized primarily in the liver, where they undergo hydrolysis and oxidation, leading to the formation of monoester metabolites. These metabolites are excreted primarily through urine. The half-life of phthalates can vary significantly depending on the specific compound and the individual's metabolism.

Pregnancy

There is limited information available regarding the safety of phthalates during pregnancy. Caution is advised in use and exposure.

Breast-feeding

Limited data available. Caution is advised regarding exposure.

Storage

Store in a cool, dry place, away from direct sunlight and moisture.

Indications

• Topical antiseptic for skin disinfection
• Surgical scrubs and hand sanitizers
• Wound care management
• Pharmaceutical excipient in solid and liquid formulations

Dosage

Children: Refer to specific product guidelines for pediatric dosing recommendations, as doses can vary based on formulation and intended use.

Adults: Refer to specific product guidelines for dosing recommendations, as doses can vary based on the formulation and intended use.

Mechanism of action

Povidone acts by forming a complex with iodine when used as an antiseptic, which releases iodine slowly to exert its antimicrobial effect. The iodine disrupts microbial cell walls and interferes with protein synthesis, leading to cell death. Additionally, as a polymer, povidone can enhance drug solubility and stability by forming a hydrophilic matrix.

Pharmacodynamics

Povidone has a broad spectrum of antimicrobial activity against bacteria, viruses, and fungi. Its antiseptic properties are primarily due to the release of iodine, which is effective in reducing microbial load and preventing infection. The polymer's ability to bind to various substances allows it to be utilized in formulations that require improved stability and solubility.

Pharmacokinetics

Povidone is not absorbed systemically when applied topically, as it remains localized at the site of application. Its pharmacokinetics are largely dependent on the formulation and route of administration, with the polymer being metabolized by hydrolysis and excreted in urine as low-molecular-weight compounds. The release and activity of iodine are influenced by the concentration of povidone and the presence of organic matter.

Adverse effects

• Local irritation
• Allergic reactions
• Skin rashes
• Hypersensitivity reactions

Precautions

• Use with caution in patients with known allergies to iodine or povidone-iodine
• Avoid use in deep puncture wounds or serious burns

Pregnancy

Povidone is generally considered safe for use during pregnancy, but it is advisable to consult a healthcare professional before use.

Breast-feeding

Povidone is considered safe during breastfeeding, but it is recommended to consult a healthcare professional.

Storage

Store at room temperature, away from moisture and heat. Keep the container tightly closed.

Formulations

• Topical solution
• Ointment
• Surgical scrub
• Gauze impregnated with povidone-iodine

Dosage

Children: Refer to specific drug formulations and product labels as purified substances can vary widely in their use and dosing.

Adults: Refer to specific drug formulations and product labels as purified substances can vary widely in their use and dosing.

Mechanism of action

The mechanism of action for purified compounds varies widely depending on the specific substance. Generally, purified drugs exert their effects by interacting with specific biological targets, such as receptors, enzymes, or ion channels, leading to a desired therapeutic effect. This interaction can involve binding to receptors to activate or inhibit signaling pathways, modulating enzymatic activity, or altering physiological processes.

Pharmacodynamics

Pharmacodynamics describes the effects of a drug on the body and the relationship between drug concentration and effect. For purified drugs, this can involve dose-response relationships and the time course of their action. The purified form often enhances potency and reduces variability in response among patients, which can lead to more predictable therapeutic outcomes. The overall effect is determined by the drug's affinity for its target, the efficacy of the drug-receptor interaction, and the downstream signaling pathways activated as a result of this interaction.

Pharmacokinetics

Pharmacokinetics involves the absorption, distribution, metabolism, and excretion (ADME) of a drug. For purified substances, absorption can be more efficient due to the absence of impurities that may affect solubility or stability. Distribution may also be enhanced, leading to higher bioavailability. Metabolism can be influenced by the structure of the purified compound, as it may be metabolized more readily by liver enzymes. Excretion typically occurs through the kidneys or liver, depending on the molecular characteristics of the purified drug.

Pregnancy

Consult with a healthcare professional, as the safety of purified forms of medications during pregnancy may vary depending on the specific substance.

Breast-feeding

Consult with a healthcare professional, as the safety of purified forms of medications during breastfeeding may vary depending on the specific substance.

Storage

Store in a cool, dry place, away from light and moisture, and keep out of reach of children.

Indications

• Wound management
• Silicone implants
• Dermal fillers
• Medical lubricants
• Scar treatment

Dosage

Children: Refer to specific product guidelines for paediatric dosages, as silicone applications vary widely.

Adults: Refer to specific product guidelines for adult dosages, as silicone applications vary widely.

Mechanism of action

Silicones exhibit their effects primarily through their physical properties rather than a specific biochemical mechanism. They form a protective barrier that is hydrophobic, preventing moisture and microbial penetration, which aids in wound healing and reduces the risk of infection. Their flexibility and inertness also allow them to integrate well with biological tissues.

Pharmacodynamics

Silicones are generally inert and do not interact significantly with biological systems. They provide mechanical support, lubricate surfaces, and facilitate healing without eliciting a strong immune response. Their low toxicity and biocompatibility contribute to their favorable pharmacodynamic profile in medical applications.

Pharmacokinetics

Silicones are not absorbed by the body when used in medical applications. They remain at the site of application and do not undergo significant metabolism. Their elimination is largely through physical means, including degradation over time or removal during surgical procedures. The pharmacokinetic properties can vary depending on the specific silicone formulation and application.

Pregnancy

Silicone is generally considered safe for use during pregnancy as it is inert and non-toxic. However, specific products should be evaluated for safety.

Breast-feeding

Silicone is also considered safe during breastfeeding as it does not transfer into milk; however, care should be taken with specific formulations.

Storage

Store in a cool, dry place away from direct sunlight.

Indications

• Nutritional supplementation
• Energy source in enteral nutrition
• Excipient in pharmaceutical formulations

Dosage

Children: Refer to specific guidelines or product inserts for dosing information, as it can vary based on the context of use.

Adults: Refer to specific guidelines or product inserts for dosing information, as it can vary based on the context of use.

Mechanism of action

Starch is broken down into glucose units by enzymes such as amylase during digestion. The glucose is then absorbed in the intestines and utilized for energy production in the body's cells. This pathway involves hydrolysis of the glycosidic bonds, converting starch into simpler sugars.

Pharmacodynamics

Starch primarily serves as an energy source. Its digestion and absorption lead to an increase in blood glucose levels, which provides energy for metabolic processes. In this context, it plays a crucial role in maintaining energy homeostasis in the body.

Pharmacokinetics

Starch is not absorbed in its polymeric form; it must first be enzymatically hydrolyzed into simpler sugars such as maltose and glucose. The digestion and absorption of starch occur predominantly in the small intestine, with glucose being readily absorbed into the bloodstream. The rate of absorption can vary depending on the type of starch and its physical form.

Adverse effects

• Allergic reactions
• Gastrointestinal discomfort
• Diarrhea
• Constipation

Precautions

• Use with caution in individuals with known allergies to starch or starch derivatives
• Monitor for gastrointestinal symptoms in patients with a history of digestive disorders

Pregnancy

Starch is generally considered safe for use during pregnancy. However, it should be consumed in moderation as part of a balanced diet.

Breast-feeding

Starch is deemed safe for nursing mothers when used in moderation as part of a balanced diet.

Storage

Store in a cool, dry place away from moisture and direct sunlight.

Formulations

• Powder
• Granules
• Tablets
• Suspensions

Dosage

Children: Refer to specific guidelines or pharmacological texts, as no established clinical dosing is available.

Adults: Refer to specific guidelines or pharmacological texts, as no established clinical dosing is available.

Mechanism of action

Triethyl functions as an alkylating agent, introducing alkyl groups into various substrates, which can lead to the modification of nucleic acids and proteins. This mechanism can result in the disruption of normal cellular processes, including inhibition of DNA replication and transcription, ultimately leading to cell death in susceptible cells. Its reactivity is primarily due to the presence of multiple ethyl groups, which can interact with nucleophilic sites in biological molecules.

Pharmacodynamics

The pharmacodynamics of triethyl are characterized by its ability to form covalent bonds with nucleophilic sites in biomolecules, influencing cellular functions and integrity. The modulation of DNA and protein function can lead to cytotoxic effects, particularly in rapidly dividing cells. Its effects may be dose-dependent, with higher concentrations resulting in increased toxicity and potential side effects.

Pharmacokinetics

Triethyl's pharmacokinetics are not well-studied in a clinical context, as it is primarily utilized in chemical processing rather than therapeutic applications. However, when considering alkylating agents in general, they may exhibit variable absorption, distribution, metabolism, and excretion depending on their chemical structure and the route of exposure. Following administration, such compounds can accumulate in tissues, particularly in the liver and kidneys, and may undergo metabolic transformation before excretion. Due to its reactive nature, triethyl can also pose risks of toxicity and adverse effects.

Adverse effects

• Nausea
• Vomiting
• Dizziness
• Headache
• Respiratory depression

Precautions

• Use with caution in patients with a history of respiratory issues
• Monitor liver function tests due to potential hepatotoxicity

Pregnancy

Triethyl is not recommended during pregnancy due to potential risks to the fetus.

Breast-feeding

Caution is advised as it is not known if triethyl is excreted in breast milk.

Storage

Store in a cool, dry place away from light and moisture.

Mechanism of action

Ethanol affects the brain’s neurons in several ways. It alters their membranes as well as their ion channels, enzymes, and receptors. Alcohol also binds directly to the receptors for acetylcholine, serotonin, GABA, and the NMDA receptors for glutamate. The sedative effects of ethanol are mediated through binding to GABA receptors and glycine receptors (alpha 1 and alpha 2 subunits). It also inhibits NMDA receptor functioning. In its role as an anti-infective, ethanol acts as an osmolyte or dehydrating agent that disrupts the osmotic balance across cell membranes. ... Ethanol is known to affect a large number of membrane proteins that participate in signaling pathways such as neurotransmitter receptors, enzymes, and ion channels, and there is extensive evidence that ethanol interacts with a variety of neurotransmitters. The major actions of ethanol involve enhancing the inhibitory effects of gamma-aminobutyric acid (GABA) at GABAa receptors and blockade of the N-methyl-D-aspartate (NMDA) subtype of glutamate, an excitatory amine acid (EAA) receptor. Animal studies indicate that the acute effects of ethanol result from competitive inhibition of glycine binding to NMDA receptor and disruption of glutamatergic neurotransmission by inhibiting the response of the NMDA receptor. Persistent glycine antagonism and attenuation of glutamatergic neurotransmission by chronic ethanol exposure results in tolerance to ethanol by enhancing EAA neurotransmission and NMDA receptor upregulation. The latter appears to involve selective increases in NMDA R2B subunit concentrations and other molecular changes in specific brain loci. The abrupt withdrawal of ethanol thus produces a hyperexcitable state that leads to the ethanol withdrawal syndrome and excitotoxic neuronal death. GABA-mediated inhibition, which normally acts to limit excitation, is eliminated during ethanol withdrawal syndrome and further intensifies this excitation. In addition, NMDA receptors function to inhibit the release of dopamine in the nucleus accumbens and mesolimbic structures, which modulate the reinforcing action of addictive xenobiotics such as ethanol. By inhibiting NMDA receptor activity, ethanol could increase dopamine release from the nucleus accumbens and ventral tegmental area and could thus create dependence. Chronic ethanol administration also results in tolerance, dependence, and an ethanol withdrawal syndrome, mediated, in part, by desensitization and or downregulation of GABAa receptors. The development of alcoholic ketoacidosis (AKA) requires that a combination of physical and physiologic events occur. The normal response to starvation and depletion of hepatic glycogen stores is for amino acids to be converted to pyruvate. Pyruvate can serve as a substrate for gluconeogenesis, be converted to acetyl-CoA, which can enter the Krebs cycle or can be utilized in various biosynthetic pathways (eg, fatty acid, ketone bodies, cholesterol, and acetylcholine) ... Ethanol metabolism generates NADH, resulting in an excess of reducing potential. This high redox state favors the conversion of pyruvate to lactate, diverting pyruvate from being a substrate for gluconeogenesis. To compensate for the lack of normal metabolic substrates, the body mobilizes fat from adipose tissue and increased fatty acid metabolism as an alternative source of energy. This response is mediated by a decrease in insulin and an increased secretion of glucagon, catecholamines, growth hormone, and cortisol. Fatty acid metabolism results in the formation of acetyl-CoA and it combines with the excess acetate that is generated from ethanol metabolism to form acetoacetate. Most of the acetoacetate is reduced to beta-hydroxybutyrate due to the excess reducing potential or high redox state of the cell. Volume depletion interferes with the renal elimination of acetoacetate and beta-hydroxybutyrate, and contributes to the acidosis. An elevated lactate concentration may result from shunting from pyruvate or

Pharmacodynamics

Alcohol produces injury to cells by dehydration and precipitation of the cytoplasm or protoplasm. This accounts for its bacteriocidal and antifungal action. When alcohol is injected in close proximity to nerve tissues, it produces neuritis and nerve degeneration (neurolysis). Ninety to 98% of ethanol that enters the body is completely oxidized. Ethanol is also used as a cosolvent to dissolve many insoluble drugs and to serve as a mild sedative in some medicinal formulations. Ethanol also binds to GABA, glycine, NMDA receptors and modulates their effects. Ethanol is also metabolised by the hepatic enzyme alcohol dehydrogenase.

Mechanism of action

There is no well controlled data that can formally substantiate the method of action. However, ongoing studies suggest that there may exist a histological wound healing profile induced by allantoin in rats that leads to the amelioration and fastening of the reestablishment of normal skin. This facilitation of wound healing is supported by observations that wounds inflicted to rat subjects to which topical allantoin preparations were applied histologically demonstrated increased vasodilation, presence of inflammatory exudates, number of inflammatory cells, angiogenesis, fibroblast proliferation, and increased collagen deposition when compared to rat subjects with wounds that did not receive any allantoin administration.

Pharmacodynamics

There is no well controlled and appropriate data that can formally substantiate the pharmacodynamic properties of allantoin. Nevertheless, ongoing studies suggest that allantoin possesses moisturizing and keratolytic effects, as well as abilities to increase the water content of the extracellular matrix and enhance the desquamation of upper layers of dead skin cells, all of which are activities that can promote cell proliferation and facilitate wound healing.