RANIDOM-MPS

Indications

• Constipation
• Irritable bowel syndrome (IBS)
• Gastrointestinal discomfort
• As a dietary fiber supplement

Dosage

Children: Refer to specific product labeling and guidelines, as doses may vary based on formulation and intended use.

Adults: Refer to specific product labeling and guidelines, as doses may vary based on formulation and intended use.

Mechanism of action

Acacia acts primarily as a soluble dietary fiber. It is thought to benefit gut health by promoting the growth of beneficial bacteria, thus acting as a prebiotic. Its mucilage content may also contribute to its soothing effects on the gastrointestinal tract.

Pharmacodynamics

The pharmacodynamics of acacia involve its ability to modify gut flora and increase stool bulk. It can enhance the water-holding capacity of stool, facilitating smoother bowel movements. Additionally, its demulcent properties may help coat the mucosal lining of the gastrointestinal tract, providing relief from irritation.

Pharmacokinetics

Acacia is not digested in the stomach and small intestine, but it is fermented by colonic bacteria in the large intestine. Its components are absorbed as short-chain fatty acids, contributing to the overall health of the gut microbiome. The onset of action for acacia's effects on bowel habits can vary depending on individual digestive health and dietary factors.

Adverse effects

• Gastrointestinal discomfort
• Nausea
• Diarrhea
• Allergic reactions in sensitive individuals

Precautions

• Should be used with caution in individuals with known allergies to plant-derived substances
• Patients with gastrointestinal disorders should consult a healthcare professional before use

Pregnancy

Generally considered safe for use during pregnancy, but consultation with a healthcare provider is recommended.

Breast-feeding

Considered safe during breastfeeding; however, it is advisable to consult a healthcare professional.

Storage

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

Formulations

• Powder
• Granules
• Capsules
• Liquid extracts

Indications

• Food coloring
• Flavoring agent
• Culinary applications

Dosage

Children: Refer to food product specifications, as dosage varies based on application. No specific therapeutic dose exists.

Adults: Refer to food product specifications, as dosage varies based on application. No specific therapeutic dose exists.

Mechanism of action

Caramel's mechanism of action primarily involves its role as a colorant and flavor enhancer in food products. The heating process leads to the breakdown of sugar molecules, resulting in the formation of various compounds that contribute to its color and taste. These compounds may also interact with taste receptors, enhancing the sensory experience of food.

Pharmacodynamics

Caramel does not have pharmacological effects in the traditional sense, as it is primarily a food additive. Its primary role is to provide color and flavor to foods rather than exerting therapeutic effects. However, it can influence the palatability of food items, potentially affecting food intake and enjoyment.

Pharmacokinetics

As a food additive, caramel is generally not absorbed in significant quantities in the gastrointestinal tract. It is metabolized by gut bacteria and may be broken down into simple sugars and other metabolites. The exact metabolic pathway is not well defined, as caramel is considered a complex mixture rather than a single compound.

Pregnancy

Caramel is generally regarded as safe for consumption during pregnancy when used in food products.

Breast-feeding

Caramel is considered safe during breastfeeding when consumed in moderate amounts as part of food.

Storage

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

Formulations

• Liquid caramel
• Caramel powder
• Caramel syrup

Indications

• Alcohol use disorder
• Anxiety disorders
• Sedation
• Muscle relaxation

Dosage

Children: Refer to the BNF for Children for specific dosing guidelines in paediatric populations.

Adults: Refer to the specific BNF guidelines for dosing related to alcohol use disorder and other indications.

Mechanism of action

Ethyl groups serve primarily as substituents in organic chemistry, influencing the properties and reactivity of the parent molecules. In the context of ethanol, which contains an ethyl group, its mechanism of action involves the enhancement of gamma-aminobutyric acid (GABA) receptor activity, leading to increased inhibitory neurotransmission. This results in its sedative, anxiolytic, and muscle relaxant effects.

Pharmacodynamics

The pharmacodynamics of compounds containing the ethyl group, particularly ethanol, include its effects on the central nervous system, where it acts as a depressant. Ethanol enhances the effects of GABA, resulting in sedation, impaired motor function, and decreased anxiety. It can also affect the dopaminergic pathways, leading to the release of dopamine, which contributes to its reinforcing properties.

Pharmacokinetics

Ethanol is rapidly absorbed from the gastrointestinal tract, with peak blood concentrations typically reached within 30 to 90 minutes after consumption. It is metabolized primarily in the liver by alcohol dehydrogenase and aldehyde dehydrogenase, with a first-order elimination kinetics, typically at a rate of 10 to 15 mL of pure alcohol per hour. Ethanol is also known to exhibit a volume of distribution of approximately 0.5 to 0.7 L/kg in adults.

Indications

• Enhancement of taste in food and beverages
• Improvement of palatability in nutritional products
• Masking undesirable flavors in medications

Dosage

Children: There is no specific pediatric dosage for flavor agents as they are used as needed to improve the taste of food and beverages.

Adults: There is no specific dosage for flavor agents as they are used as needed to achieve the desired taste and aroma in food and beverages.

Mechanism of action

Flavor compounds interact with taste receptors on the tongue, stimulating the sensory neurons responsible for taste perception. This interaction influences the overall flavor profile of food and beverages, enhancing the eating experience. Some flavors may also have a psychological effect, stimulating appetite or evoking pleasant memories associated with certain tastes.

Pharmacodynamics

While flavor agents are primarily used for sensory enhancement in food, their pharmacodynamic effects are minimal as they are not designed to elicit a pharmacological response. However, certain flavors may influence digestion and metabolism indirectly by enhancing saliva production or affecting gut motility. The enjoyment of flavored products can also lead to increased food intake and satisfaction.

Pharmacokinetics

Flavour compounds are typically ingested and metabolized by the body. Their absorption rates can vary depending on their chemical structure and formulation. Once ingested, they may be rapidly metabolized in the liver and other tissues, with excretion primarily via urine. The specific pharmacokinetic profiles of flavor agents can vary significantly based on their source and chemical properties.

Pregnancy

Flavours are generally considered safe for use during pregnancy, but specific assessments should be made based on the type of flavouring agent.

Breast-feeding

Most flavouring agents are deemed safe during breastfeeding, although it's advisable to consult healthcare professionals regarding specific ingredients.

Storage

Store in a cool, dry place away from direct sunlight and heat sources. Ensure that the container is tightly sealed to prevent contamination.

Indications

• Dry eye syndrome
• Ocular surface disease
• Post-operative eye lubrication
• Contact lens comfort
• Topical lubrication for various mucosal surfaces

Dosage

Children: Refer to the specific product labeling for dosing information, as it varies by formulation.

Adults: Refer to the specific product labeling for dosing information, as it varies by formulation.

Mechanism of action

Hypromellose acts as a hydrophilic polymer that forms a gel-like consistency upon contact with water. In ocular applications, it increases the viscosity of the tear film, thereby prolonging the retention time of the eye drops on the ocular surface. This helps to alleviate dryness and provides lubrication. The polymer's hydrophilic nature allows it to attract and retain moisture, further enhancing its effectiveness as a lubricant.

Pharmacodynamics

The pharmacodynamic effects of hypromellose are primarily related to its ability to enhance moisture retention and provide lubrication. By increasing viscosity and forming a protective barrier on the surface of the tissue, it reduces friction and irritation. It also aids in the healing of epithelial surfaces by maintaining moisture and facilitating comfort during the healing process.

Pharmacokinetics

Hypromellose is not absorbed systemically when applied topically to the eyes. Its pharmacokinetic profile is characterized by its local action in the ocular surface, where it remains until it is washed away by tears or absorbed by the conjunctiva. The duration of action can vary depending on the formulation and concentration used. In oral formulations, it acts as a sustained-release agent, affecting the release of active ingredients but is not absorbed in significant amounts.

Adverse effects

• Local irritation
• Allergic reactions
• Visual disturbances
• Increased tear viscosity

Precautions

• Use with caution in patients with known hypersensitivity to components
• Monitor for prolonged use to avoid potential corneal epithelial damage

Pregnancy

Hypermellose is generally considered safe for use during pregnancy, but it is advisable to consult a healthcare provider.

Breast-feeding

Hypermellose is considered safe for use during breastfeeding as it is not known to be absorbed systemically.

Storage

Store at room temperature, protect from moisture and light.

Formulations

• Eye drops
• Ointments
• Gels

Dosage

Children: Refer to specific medication guidelines for appropriate dosing.

Adults: Refer to specific medication guidelines for appropriate dosing.

Pregnancy

The safety of irish during pregnancy has not been established. Use only if potential benefits justify the risks.

Breast-feeding

It is unknown whether irish is excreted in human milk. Caution is advised when using during breastfeeding.

Storage

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

Indications

• Dyspepsia
• Gastroesophageal reflux disease (GERD)
• Peptic ulcer disease
• Heartburn

Dosage

Children: Refer to the BNF for Children for specific pediatric dosing guidance.

Adults: Refer to the BNF for specific dosing recommendations.

Mechanism of action

Magaldrate works by neutralizing gastric acid through a chemical reaction that produces water and salts. It promotes a more alkaline environment in the stomach, which helps to alleviate symptoms of acid-related disorders. The presence of both aluminum and magnesium ions allows for a balanced effect, as magnesium can counteract the constipating effects of aluminum.

Pharmacodynamics

The pharmacodynamic effects of magaldrate involve the reduction of gastric acidity, leading to increased gastric pH. This action helps to relieve heartburn, indigestion, and discomfort associated with excess stomach acid. The combination of aluminum and magnesium also contributes to a more prolonged effect, as they act synergistically to enhance the antacid properties.

Pharmacokinetics

Magaldrate is generally not absorbed systemically; rather, it acts locally in the gastrointestinal tract. The onset of action is typically rapid, providing quick relief of symptoms. The duration of action can vary based on the formulation and dosage but generally lasts for several hours. Renal impairment may affect the elimination of aluminum and magnesium, necessitating caution in patients with compromised kidney function.

Adverse effects

• Constipation
• Diarrhea
• Nausea
• Abdominal pain

Precautions

• Use with caution in patients with renal impairment
• Monitor patients with electrolyte disturbances

Pregnancy

Magaldrate can be used during pregnancy if necessary, but it is advisable to consult a healthcare professional.

Breast-feeding

Magaldrate is considered safe during breastfeeding but should be used under medical supervision.

Storage

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

Formulations

• Oral suspension
• Tablets

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

• Management of wounds
• Burn treatment
• Dental caries prevention
• Topical antiseptic
• Infection control in medical devices

Dosage

Children: Refer to BNF for Children for age-appropriate dosing recommendations.

Adults: Refer to BNF for specific dosing guidelines depending on the clinical context and formulation used.

Mechanism of action

Silver ions precipitate with chloride or phosphate anions and bind to proteins, leading to antibacterial effects by disrupting cell membranes. They can bind to peptidoglycans in bacterial cell walls, causing loss of structural integrity and function. Silver also binds to and oxidizes sulphydryl groups in enzymes, inhibiting metabolic processes. Additionally, silver ions may attach to bacterial DNA, inhibiting replication, and silver nanoparticles can generate reactive oxygen species, causing oxidative stress.

Pharmacodynamics

Silver exhibits broad-spectrum antimicrobial activity, effective against both Gram-positive and Gram-negative bacteria, including _Streptococcus mutans_, _Staphylococcus aureus_, and _Escherichia coli_. It has shown dose-dependent effects against methicillin-resistant Staphylococcus aureus (MRSA). Furthermore, silver compounds have demonstrated anti-inflammatory properties in models of skin inflammation and ulcerative colitis, suppressing pro-inflammatory cytokines and matrix metalloproteinases.

Pharmacokinetics

Silver does not have a well-defined pharmacokinetic profile due to its nature as a metal; however, it is known to bind extensively to proteins and tissues. Chronic exposure to silver can lead to accumulation and potential toxicity. The absorption and distribution of silver ions can vary based on the form of silver administered, with nanoparticles showing different properties compared to ionic silver.

Pregnancy

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

Breast-feeding

Caution is advised as it is not known whether silver is excreted in human milk.

Storage

Store in a well-closed container, protected from light, at room temperature.

Formulations

• Silver nitrate
• Nanocrystalline silver

Indications

• Flatulence
• Bloating
• Gastroesophageal reflux disease
• Functional dyspepsia

Dosage

Children: For children, refer to the BNF for Children for specific dosing recommendations.

Adults: The usual adult dose is 40 to 125 mg taken after meals and at bedtime, as needed.

Mechanism of action

Simethicone is a surfactant that decreases the surface tension of gas bubbles in the gastrointestinal tract, facilitating their expulsion. It acts by forming a film of low surface tension that promotes the coalescence of mucus-surrounded gas bubbles, allowing for easier passage of gas.

Pharmacodynamics

Simethicone decreases the surface tension of gas bubbles in the gastrointestinal tract, facilitating their expulsion. Its effects are generally short-lived, as it is typically administered as needed. The therapeutic index is wide since it is not absorbed systemically, making it safe for use in various patient populations.

Pharmacokinetics

Simethicone is not systemically absorbed following oral administration, which contributes to its safety profile. Due to its lack of systemic absorption, specific pharmacokinetic parameters such as half-life, clearance, and volume of distribution are not applicable.

Pregnancy

Simethicone can be used during pregnancy as there are no known risks associated with its use.

Breast-feeding

Simethicone is considered safe to use during breastfeeding, as it is not absorbed systemically.

Storage

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

Formulations

• Oral suspension
• Chewable tablets
• Soft gels

Indications

• Caloric reduction in food and beverages
• Management of diabetes
• Weight management

Dosage

Children: Refer to the BNF for Children for specific guidelines on the use of sucralose in pediatric populations.

Adults: Sucralose is typically used in food and beverage products as a sweetener. There are no specific dosage recommendations for adults, as it is used according to taste preference and product formulation.

Mechanism of action

Sucralose acts as a positive allosteric modulator of the human sweet taste receptor. It interacts with the T1R taste receptor family, particularly enhancing the sweetness perception by binding to the hinge region of the receptor. This interaction induces a conformational change that stabilizes the active state of the receptor, increasing its responsiveness to sweet stimuli. This mechanism allows sucralose to mimic the taste of sugar without the associated caloric intake.

Pharmacodynamics

As a non-nutritive sweetener, sucralose does not undergo metabolic processing in the body, which means it does not contribute to energy intake. It provides intense sweetness at low concentrations, stimulating the sweetness receptors in the taste buds. The pharmacodynamic profile indicates minimal physiological effects beyond taste perception, making it suitable for dietary use without impacting blood glucose levels.

Pharmacokinetics

Sucralose is poorly absorbed in the gastrointestinal tract, with an estimated absorption rate of less than 15%. The majority of ingested sucralose is excreted unchanged in the urine. The elimination half-life is not well defined due to its minimal absorption, but it is generally considered to have a rapid clearance from the body. The pharmacokinetic properties support its use as a safe alternative to sugar for those managing caloric intake.

Pregnancy

Sucralose is generally considered safe during pregnancy, but it is recommended to consult a healthcare provider.

Breast-feeding

Sucralose is also considered safe during breastfeeding, although it is advisable to seek medical advice.

Storage

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

Formulations

• Granulated sucralose
• Liquid sucralose
• Tablets

Indications

• Used as a thickening agent in food products
• Utilized in pharmaceutical formulations as a stabilizer
• Employed in cosmetics for texture improvement
• Applied in industrial products for its viscosity properties

Dosage

Children: Refer to specific product guidelines for appropriate use. Xanthan is used in formulations as a thickener or stabilizer, and dosage should be evaluated based on the specific product and formulation.

Adults: Refer to specific product guidelines for appropriate use. Xanthan is typically used in small quantities as a thickener or stabilizer in food and pharmaceutical products.

Mechanism of action

Xanthan functions primarily as a thickener and stabilizer. It acts by interacting with water molecules to form a gel-like consistency, which enhances the texture and stability of products. Its unique rheological properties allow it to maintain viscosity under varying conditions, which is beneficial in food and pharmaceutical applications.

Pharmacodynamics

Xanthan's action is primarily physical rather than pharmacological. It does not exert a direct therapeutic effect but influences the delivery and stability of active ingredients in formulations. The gel formation and viscosity changes help ensure the uniform distribution of substances in liquid formulations, which can improve the effectiveness of the drug delivery.

Pharmacokinetics

As xanthan is a polysaccharide, it is not absorbed in the gastrointestinal tract when ingested. It passes through the digestive system largely unchanged. In terms of metabolism, xanthan is broken down by colonic bacteria, resulting in short-chain fatty acids. Its pharmacokinetic profile indicates that it has a low bioavailability due to its large molecular size and structure.

Pregnancy

There is insufficient data on the use of xanthan during pregnancy. Consult a healthcare professional before use.

Breast-feeding

There is insufficient data on the excretion of xanthan in human milk. Consult a healthcare professional before use.

Storage

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

Formulations

• Xanthan gum powder

Mechanism of action

To elucidate the possible mechanism of initiation of lipid peroxidation in silver nitrate treated erythrocytes, the effect of AgNO3 on Hb catalyzed peroxidation of phospholipid liposomes was studied. Ag+ significantly increases the rate of Hb-catalyzed peroxidation. The inhibition of this effect by superoxide dismutase and catalase suggests that superoxide radical and H2O2 are involved. It was demonstrated also that Ag+ potentiates the Hb autoxidation and increases the binding of Hb to the erythrocyte membrane. Silver nitrate exhibits antiseptic, germicidal, astringent, and caustic or escharotic activity. These effects may result from silver ions readily combining with sulfhydryl, carboxyl, phosphate, amino, and other biologically important chemical groups. When silver ions interact with proteins, physical properties of the protein are usually altered; the protein may be denatured and precipitation usually occurs. Silver ions act on the surface of bacteria causing substantial changes in the cell wall and membrane. The germicidal activity of silver nitrate may be attributed to precipitation of bacterial proteins by liberated silver ions.

Mechanism of action

The majority of released silver ions precipitate with chloride or phosphate anions or bind to albumins, macroglobulins, or tissue debris. While bound silver ions do not exert antibacterial actions, they may potentially play a role in silver toxicity in case of chronic exposure. Silver ions mediate antibacterial effects via disrupting the bacterial, fungal, and protozoal cell membranes; they bind to disulphide in membrane proteins, readily allowing penetration through the membranes and intracellular absorption via pinocytosis. They may also bind to negatively-charged peptidoglycans in the cell wall via electrostatic interactions, leading to disruption of membrane transport function and loss of structural integrity. Silver ions also bind to and oxidize sulphydryl groups (SH) in bacterial cytoplasmic enzymes to aberrate their function in metabolic processes. Silver nanoparticles may cause an increase in reactive oxygen species (ROS) inside the microbial cells leading to metal-induced oxidative stress and cell damage. They also modulate cellular signal system via inhibition of phosphorylation of essential bacterial proteins to eventually cause cell death. It is also reported that silver ions also attach to guanine in bacterial DNA, which inhibits DNA replication. While it is not fully understood, the mode of action of silver compounds in preventing and arresting dental caries is thought to involve inhibition of the demineralization process in addition to cytoplasmic and membrane function perturbation mentioned above. Silver compounds may directly interact with hydroxyapatite, a major tooth component. Light catalyzes the reduction of silver salts deposited in skin to metallic silver & it /is/ subsequently oxidized to silver sulfide; it is the deposition of the latter compound which accounts for the gray discoloration pathognomonic of argyria. /Silver and compounds/ Silver nanoparticles (nano-Ag) are potent and broad-spectrum antimicrobial agents. In this study, spherical nano-Ag (average diameter = 9.3 nm) particles were synthesized using a borohydride reduction method and the mode of their antibacterial action against E. coli was investigated by proteomic approaches (2-DE and MS identification), conducted in parallel to analyses involving solutions of Ag(+) ions. The proteomic data revealed that a short exposure of E. coli cells to antibacterial concentrations of nano-Ag resulted in an accumulation of envelope protein precursors, indicative of the dissipation of proton motive force. Consistent with these proteomic findings, nano-Ag were shown to destabilize the outer membrane, collapse the plasma membrane potential and deplete the levels of intracellular ATP. The mode of action of nano-Ag was also found to be similar to that of Ag(+) ions ... however, the effective concentrations of nano-Ag and Ag(+) ions were at nanomolar and micromolar levels, respectively. Nano-Ag appear to be an efficient physicochemical system conferring antimicrobial silver activities.

Pharmacodynamics

Silver exhibits a broad-spectrum antimicrobial activity. Silver ions were shown to mediate an effective antibacterial action against _Streptococcus mutans_, one of major bacteria present in the human oral cavity and one of etiological microorganism of dental caries. A study reported a dose-dependent antimicrobial activity of silver nanoparticles against MRSA and non-MRSA bacteria. Silver nanoparticles were also shown to mediate antibacterial activity against Gram-positive _S. aureus_ and Gram-negative _E. coli_ by inhibiting the growth. In experimental dinitrochlorobenzene-induced inflammatory models in porcine or murine skin, topical application of silver nitrate and nanocrystalline silver were shown to exert anti-inflammatory effects associated with lymphocyte apoptosis, decreased expression of pro-inflammatory cytokines, and reduced gelatinase activity. In a rat model of ulcerative colitis, orally or intracolonically administered nanocrystalline silver were shown to suppress matrix metalloproteinase (MMP-9), tumour necrosis factor (TNF), and interleukin-β (IL-β) and IL-12.

Mechanism of action

Simethicone is a surfactant that decreases the surface tension of gas bubbles in the gastrointestinal tract, more easily allowing gas to exit the body. The clinical use of simethicone is based on its antifoam properties. Silicone antifoams spread on the surface of aqueous liquids, forming a film of low surface tension and thus causing collapse of foam bubbles. Simethicone reportedly allows mucus-surrounded gas bubbles in the GI tract to coalesce and be expelled.

Pharmacodynamics

Simethicone decreases the surface tension of gas bubbles in the gastrointestinal tract, facilitating their expulsion. It has a short duration of action as it is generally given as needed, and a wide therapeutic index as it is not systemically absorbed.

Mechanism of action

Positive allosteric modulators of the human sweet taste receptor ...developed as a new way of reducing dietary sugar intake .../can be used as/ ...valuable tool molecules to study the general mechanism of positive allosteric modulations of T1R taste receptors. Using chimeric receptors, mutagenesis, and molecular modeling, .../the study/ reveal how ...sweet enhancers follow a similar mechanism as the natural umami taste enhancer molecules. Whereas the sweeteners bind to the hinge region and induce the closure of the Venus flytrap domain of T1R2, the enhancers bind close to the opening and further stabilize the closed and active conformation of the receptor.