IRBESARTAN/AMLODIPINE BESYLATE IMPACT 300MG/10MG

Indications

• Hypertension
• Angina

Dosage

Children: Children 1 month to 11 years: Initially 100–200 micrograms/kg once daily; increased if necessary at intervals of 1–2 weeks up to a maximum of 5 mg once daily.

Adults: Initially, 5 mg once daily, increased if necessary to a maximum of 10 mg once daily.

Mechanism of action

Amlodipine inhibits the influx of calcium ions into vascular smooth muscle and cardiac muscle cells, leading to vasodilation and decreased myocardial oxygen demand.

Pharmacodynamics

Amlodipine causes a reduction in systemic vascular resistance and arterial pressure, resulting in decreased workload on the heart. It has a long duration of action due to its slow onset and prolonged effects.

Pharmacokinetics

Amlodipine is well absorbed orally, with peak plasma concentrations occurring 6-12 hours after administration. It has a half-life of approximately 30-50 hours, allowing for once-daily dosing. It is extensively metabolized in the liver and excreted primarily in the urine.

Contra-indications

• Cardiogenic shock
• Aortic stenosis

Adverse effects

• Asthenia
• Constipation
• Diarrhoea
• Drowsiness
• Dyspnoea
• Gastrointestinal disturbances

Interactions

• Grapefruit juice (severe increase in exposure)
• Enzalutamide (moderate decrease in exposure)
• Apalutamide (moderate decrease in exposure)
• Dronedarone (moderate increase in exposure)
• Antifungals (azoles) (moderate increase in exposure)
• Miconazole (moderate increase in exposure)
• Cobicistat (moderate increase in exposure)
• Crizotinib (moderate increase in exposure)
• Dabrafenib (moderate decrease in exposure)
• Idelalisib (moderate increase in exposure)

Precautions

• Caution in hepatic impairment (risk of increased exposure)
• Monitor for sudden withdrawal effects, which may exacerbate myocardial ischaemia

Pregnancy

Manufacturer advises caution due to limited data on safety.

Breast-feeding

Manufacturer advises to avoid; no information available.

Storage

Store at room temperature, away from moisture and heat.

Formulations

• Amlodipine 5mg/5ml oral solution (sugar-free)
• Amlodipine 10mg/5ml oral solution (sugar-free)
• Amlodipine 5 mg tablets
• Amlodipine 10 mg tablets

Indications

• Hypertension
• Diabetic nephropathy in patients with type 2 diabetes

Dosage

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

Adults: Initially 75–150 mg once daily, may be increased to 300 mg once daily if tolerated.

Mechanism of action

Irbesartan prevents angiotensin II binding to the AT1 receptor in tissues such as vascular smooth muscle and the adrenal gland. It binds to the AT1 receptor with over 8500 times more affinity than to the AT2 receptor. By blocking angiotensin II from binding, irbesartan induces vascular smooth muscle relaxation and inhibits aldosterone secretion, which together lower blood pressure. This action counteracts the vasoconstrictive and sodium-retaining effects of angiotensin II.

Pharmacodynamics

Irbesartan is an effective angiotensin receptor blocker that lowers blood pressure and has a wide therapeutic index. It is well-tolerated at doses up to 900 mg daily, although typical therapeutic doses range from 150 mg. Its long half-life allows for once-daily dosing, making it convenient for patient adherence.

Pharmacokinetics

Irbesartan is well absorbed following oral administration, with peak plasma concentrations occurring within 1-2 hours. It undergoes extensive hepatic metabolism, primarily by glucuronidation, and is excreted via the urine and feces. The elimination half-life is approximately 11 hours, which supports its once-daily dosing regimen. Renal impairment may necessitate cautious use, especially in patients with creatinine clearance less than 30 mL/min.

Contra-indications

• Hypersensitivity to irbesartan or any of the excipients
• Severe hepatic impairment
• Bilateral renal artery stenosis or stenosis in a solitary kidney

Adverse effects

• Dizziness
• Fatigue
• Hypotension
• Angioedema
• Elevated blood urea or creatinine
• Hyperkalemia
• Gastrointestinal disturbances

Interactions

• Irbesartan and bulevirtide: Unknown (affects efficacy)
• Other antihypertensive agents may have additive effects
• Non-steroidal anti-inflammatory drugs (NSAIDs) may reduce the antihypertensive effect of irbesartan

Precautions

• Caution in patients with a history of angioedema
• Monitor renal function in patients with renal impairment
• Use with caution in patients with diabetes or heart failure

Pregnancy

Irbesartan is contraindicated during pregnancy due to potential harm to the fetus, particularly in the second and third trimesters.

Breast-feeding

Caution is advised as it is not known if irbesartan is excreted in human milk.

Storage

Store at room temperature, away from moisture and heat.

Formulations

• Irbesartan 75 mg tablets
• Irbesartan 150 mg tablets
• Irbesartan 300 mg tablets
• Oral suspension (special order)

Indications

• Calcium deficiency
• Osteoporosis prevention and treatment
• Hypoparathyroidism
• Rickets
• Osteomalacia
• Paget's disease of bone

Dosage

Children: Refer to the BNF for Children for appropriate dosing recommendations based on age and weight.

Adults: Refer to specific product instructions and guidelines for dosing information, as it can vary based on the condition being treated and the formulation used.

Mechanism of action

Calcined calcium supplements, such as calcium carbonate, act primarily by increasing the levels of calcium in the bloodstream. Calcium is crucial for various physiological processes, including bone formation, muscle contraction, and neurotransmitter release. In the context of bone metabolism, adequate calcium intake promotes the activity of osteoblasts, the cells responsible for bone formation.

Pharmacodynamics

Calcined calcium supplements help in maintaining and regulating serum calcium levels. They play a critical role in the prevention and treatment of osteoporosis, a condition characterized by weakened bones. Adequate calcium intake is necessary for the proper functioning of parathyroid hormone (PTH), which regulates calcium homeostasis. Additionally, these supplements may influence the metabolism of vitamin D, enhancing its action on calcium absorption in the gastrointestinal tract.

Pharmacokinetics

After oral administration, calcined calcium supplements are absorbed in the gastrointestinal tract, with absorption efficiency varying based on the formulation and presence of food. Calcium absorption occurs primarily in the small intestine, with 20-30% of dietary calcium typically absorbed. Peak serum calcium levels are reached within a few hours post-ingestion. The renal system plays a significant role in calcium homeostasis, with excess calcium being excreted in urine. Long-term supplementation can lead to increased urinary calcium excretion, necessitating monitoring for potential renal complications.

Pregnancy

Calcined products are generally considered safe in pregnancy, but clinical guidance should be sought before use.

Breast-feeding

Calcined products are typically safe during breastfeeding, but it is advisable to consult a healthcare provider.

Storage

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

Indications

• Obesity
• Weight management
• Appetite suppression

Dosage

Children: Refer to specific product guidelines, as safety and efficacy in children have not been well-established.

Adults: Refer to specific product guidelines, as dosages can vary widely between formulations.

Mechanism of action

The primary mechanism of action of HCA involves the inhibition of the enzyme ATP-citrate lyase, which plays a key role in the conversion of carbohydrates into fats. By inhibiting this enzyme, HCA may help to reduce fat storage and promote fat oxidation. Additionally, HCA is believed to increase serotonin levels in the brain, which may help to reduce appetite and cravings.

Pharmacodynamics

HCA has been shown to influence metabolic processes by promoting fat oxidation and reducing lipogenesis (fat creation). This can lead to weight reduction and may improve lipid profiles by lowering triglycerides and cholesterol levels. The appetite-suppressing effects are thought to be mediated through increased serotonin, which can enhance mood and reduce emotional eating.

Pharmacokinetics

HCA is absorbed in the gastrointestinal tract after oral administration. Its bioavailability can be affected by food intake. The metabolism of HCA primarily occurs in the liver, where it may undergo conjugation, and it is excreted via the urine. The half-life of HCA is not well-established, and further studies are needed to fully elucidate its pharmacokinetic profile.

Adverse effects

• Gastrointestinal upset
• Nausea
• Headache
• Dizziness
• Dry mouth

Interactions

• May interact with medications for diabetes, potentially leading to hypoglycemia
• Possible interaction with anticoagulants, increasing the risk of bleeding

Precautions

• Use with caution in patients with diabetes
• Should be avoided in patients with liver or kidney disease
• Not recommended for pregnant or breastfeeding women without medical advice

Pregnancy

Limited data is available; use is not recommended due to potential risks.

Breast-feeding

Not enough reliable information is available; use with caution.

Storage

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

Formulations

• Capsules
• Tablets
• Powder

Indications

• Osteoarthritis
• Rheumatoid arthritis
• Acute pain management
• Chronic pain syndromes
• Inflammatory conditions

Dosage

Children: Refer to the BNF for Children for appropriate dosing information, as pediatric doses must be determined based on specific age, weight, and clinical condition.

Adults: Refer to the specific dosing guidelines in the relevant prescribing information, as doses may vary based on the formulation and individual patient factors.

Mechanism of action

Extrat acts primarily as a non-steroidal anti-inflammatory drug (NSAID). It inhibits the cyclooxygenase (COX) enzymes, COX-1 and COX-2, which are crucial for the synthesis of prostaglandins. By blocking these enzymes, Extrat reduces the production of prostaglandins that mediate inflammation, pain, and fever. This mechanism underlies its effectiveness in alleviating symptoms associated with inflammatory conditions.

Pharmacodynamics

Extrat exhibits dose-dependent analgesic and anti-inflammatory effects. The inhibition of prostaglandin synthesis leads to a reduction in vasodilation and increased vascular permeability, which are key processes in the inflammatory response. Its antipyretic effects arise from its action on the hypothalamic heat-regulating center, thereby lowering elevated body temperature.

Pharmacokinetics

Extrat is absorbed rapidly from the gastrointestinal tract, with peak plasma concentrations occurring within 1 to 2 hours after oral administration. It has a high protein binding capacity, usually around 90-95%. The drug is metabolized primarily in the liver through cytochrome P450 enzymes and is excreted via the kidneys. The elimination half-life varies depending on the formulation but generally ranges from 2 to 4 hours.

Pregnancy

Safety during pregnancy has not been established. Use only if the potential benefit justifies the potential risk to the fetus.

Breast-feeding

It is unknown whether extrat is excreted in human milk. Caution should be exercised when administering to nursing mothers.

Storage

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

Indications

• Diabetes mellitus
• Hyperlipidemia
• Digestive disorders
• Inflammatory conditions

Dosage

Children: There is insufficient established dosing information for pediatric populations. Consult relevant pediatric dosing references for guidance.

Adults: Refer to established guidelines and clinical protocols for specific dosing. Generally, fenugreek is available in various forms, including capsules, powders, and teas, with common dosages ranging from 5 to 30 grams of seeds per day.

Mechanism of action

Fenugreek exerts its effects primarily through its active components, including saponins, alkaloids, and flavonoids. These compounds may enhance insulin sensitivity and stimulate insulin secretion, thereby aiding in the management of blood glucose levels. Additionally, fenugreek may influence lipid metabolism, potentially leading to improvements in cholesterol levels. Its anti-inflammatory properties may be attributed to the modulation of inflammatory pathways, including the inhibition of pro-inflammatory cytokines.

Pharmacodynamics

The pharmacodynamic effects of fenugreek include improvements in glucose metabolism, lipid profile, and gastrointestinal health. The soluble fiber content may aid in slowing gastric emptying, promoting satiety, and improving bowel regularity. Fenugreek's anti-inflammatory properties may help alleviate symptoms of inflammatory conditions and contribute to overall health improvement.

Pharmacokinetics

The pharmacokinetics of fenugreek are not fully elucidated. However, it is known that the active constituents are absorbed in the gastrointestinal tract, with bioavailability influenced by the method of preparation and consumption. The onset of action can vary, with effects on blood glucose levels observed within a few hours post ingestion.

Adverse effects

• Allergic reactions
• Gastrointestinal disturbances
• Hypoglycemia

Interactions

• May enhance the effects of anticoagulants
• Potential interaction with antidiabetic medications

Precautions

• Use with caution in individuals with hormone-sensitive conditions
• Monitor blood glucose levels in diabetic patients

Pregnancy

Safety during pregnancy is not established; consult a healthcare provider.

Breast-feeding

Consult a healthcare provider before use while breastfeeding.

Storage

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

Formulations

• Seeds
• Extracts
• Capsules

Indications

• Nutritional support
• Prevention of chronic diseases
• Support for digestive health
• Antioxidant support
• Hydration

Dosage

Children: In children, the recommendation for fruit intake varies by age, with guidelines typically suggesting 1 to 2 servings per day, depending on age and dietary requirements.

Adults: Fruits are generally consumed as part of a balanced diet, with recommendations often suggesting 5 portions of fruits and vegetables per day, though specific amounts may vary based on individual dietary needs.

Mechanism of action

Fruits contain various bioactive compounds, including vitamins (such as vitamin C and folate), minerals (like potassium), dietary fiber, and phytochemicals (such as flavonoids and carotenoids). These components contribute to their health benefits through various mechanisms, including antioxidant activity, modulation of inflammation, and enhancement of immune function.

Pharmacodynamics

The pharmacodynamic effects of fruits are largely attributed to their phytochemical content, which can influence metabolic pathways, reduce oxidative stress, and improve cardiovascular health. The fiber content aids in digestion and can contribute to maintaining healthy cholesterol levels. The vitamins and minerals support various physiological functions, including immune response and cellular repair.

Pharmacokinetics

The bioavailability of nutrients from fruits can vary based on the composition of the fruit and the individual's digestive health. Vitamins and antioxidants are typically absorbed in the small intestine, while dietary fiber is fermented in the colon. The metabolism of fruit-derived nutrients occurs through various pathways, with some compounds undergoing conjugation and excretion via the kidneys.

Pregnancy

Fruits are generally safe to consume during pregnancy and provide essential nutrients. However, certain fruits may need to be limited due to sugar content or potential allergies.

Breast-feeding

Fruits are safe to consume while breastfeeding and can contribute to the nutritional needs of both the mother and the infant. Some fruits may help with lactation.

Storage

Fruits should be stored in a cool, dry place, and refrigeration can help prolong freshness. Some fruits may require specific storage conditions to maintain quality.

Formulations

• whole fruit
• dried fruit
• fruit juice
• fruit puree
• fruit smoothie

Indications

• Obesity
• Weight management
• Appetite control

Dosage

Children: Safety and efficacy in children have not been established; consult a healthcare professional for appropriate guidance.

Adults: Refer to specific product guidelines, as dosages can vary widely based on formulation and concentration of active ingredients.

Mechanism of action

The primary mechanism of action of hydroxycitric acid involves the inhibition of the enzyme citrate lyase, which plays a critical role in the conversion of carbohydrates into fats. By inhibiting this enzyme, HCA may reduce fat storage and increase fat oxidation. Additionally, HCA is thought to increase serotonin levels in the brain, which may contribute to appetite suppression.

Pharmacodynamics

The pharmacodynamic effects of Garcinia extracts are largely attributed to HCA, which may influence metabolic pathways involved in fat synthesis and energy expenditure. Studies suggest that HCA may lead to a modest reduction in body weight and body fat, although results can vary significantly among individuals. The appetite-suppressing effects might be linked to increased serotonin levels, potentially leading to reduced caloric intake.

Pharmacokinetics

The pharmacokinetics of Garcinia extracts, particularly HCA, include oral absorption with peak plasma concentrations generally occurring within 1 to 2 hours following ingestion. The elimination half-life of HCA is not well-defined, but it is metabolized in the liver and excreted primarily via urine. Notably, the bioavailability of HCA may be affected by food intake and the presence of other dietary compounds.

Adverse effects

• Gastrointestinal disturbances
• Headache
• Dizziness
• Dry mouth
• Fatigue
• Skin rash

Interactions

• May interact with medications that affect blood sugar levels
• Potential interaction with anticoagulants and antiplatelet drugs

Precautions

• Use with caution in patients with diabetes
• Monitor for potential liver toxicity
• Avoid use in pregnant and breastfeeding women unless advised by a healthcare professional

Pregnancy

Use during pregnancy is not recommended due to insufficient safety data.

Breast-feeding

Use during breastfeeding is not recommended due to insufficient safety data.

Storage

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

Indications

• Gastrointestinal disorders (e.g., peptic ulcers, dyspepsia)
• Respiratory conditions (e.g., cough, bronchitis)
• Inflammatory conditions (e.g., arthritis, dermatitis)
• Viral infections (e.g., hepatitis, herpes simplex)

Dosage

Children: Refer to established clinical guidelines for appropriate dosing, as no specific dose is provided.

Adults: Refer to established clinical guidelines for appropriate dosing, as no specific dose is provided.

Mechanism of action

Glycyrrhizin, the active compound in glabra, inhibits the enzyme 11β-hydroxysteroid dehydrogenase type 2, leading to increased cortisol levels in tissues. This mechanism helps to reduce inflammation and modulate immune responses. Additionally, glabra exhibits antiviral activity by inhibiting the replication of certain viruses, possibly through interference with viral proteins and host cell interactions.

Pharmacodynamics

The pharmacodynamic effects of glabra are primarily attributed to glycyrrhizin and flavonoids present in the plant. Its anti-inflammatory effects are mediated through the inhibition of pro-inflammatory cytokines and pathways such as NF-κB. The compound also has expectorant properties, aiding in the relief of cough and respiratory distress by promoting mucus secretion and reducing irritation in the airways.

Pharmacokinetics

Glycyrrhizin is absorbed in the gastrointestinal tract, and its bioavailability can be influenced by the presence of other food components. Once absorbed, it undergoes hepatic metabolism, with its metabolites excreted primarily through urine. The half-life of glycyrrhizin can vary but is generally several hours, necessitating multiple doses for sustained therapeutic effects. Chronic use may lead to accumulation and potential side effects such as hypertension and hypokalemia due to its mineralocorticoid-like effects.

Pregnancy

The safety of glabra during pregnancy has not been established. It is advisable to avoid its use unless clearly needed.

Breast-feeding

There is limited information on the excretion of glabra in human milk. Caution is advised when administering to breastfeeding mothers.

Storage

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

Indications

• Adrenal insufficiency
• Chronic inflammatory conditions

Mechanism of action

Glycyrrhizin, the primary active component of Glycyrrhiza, exerts its effects primarily through inhibition of the enzyme 11β-hydroxysteroid dehydrogenase type 2 (11β-HSD2). This inhibition prevents the conversion of active cortisol to inactive cortisone, leading to increased cortisol levels. Elevated cortisol mimics the effects of aldosterone, resulting in sodium retention, potassium excretion, and increased blood pressure. Additionally, licorice has anti-inflammatory and antiviral properties attributed to its ability to modulate various immune pathways and inhibit viral replication.

Pharmacodynamics

The pharmacodynamic effects of Glycyrrhiza include anti-inflammatory, antiviral, and immunomodulatory activities. Glycyrrhizin has been shown to reduce inflammation by inhibiting the production of pro-inflammatory cytokines and mediators. Its potential antiviral properties are particularly noted in viral infections such as hepatitis C and COVID-19, where it may inhibit viral replication. Furthermore, its ability to enhance the effects of corticosteroids can be beneficial in treating conditions associated with adrenal insufficiency or chronic inflammation.

Pharmacokinetics

Glycyrrhizin is absorbed from the gastrointestinal tract, with peak plasma concentrations occurring within 1-2 hours after oral administration. It undergoes extensive metabolism in the liver, primarily through conjugation processes, leading to the formation of glycyrrhetic acid as a major metabolite. The elimination half-life of glycyrrhizin is approximately 6-8 hours. Glycyrrhiza components are excreted in urine predominantly as conjugated forms. Long-term use can lead to accumulation and potential side effects due to its mineralocorticoid-like effects.

Contra-indications

• Hypertension
• Hypokalemia
• Severe kidney disease
• Pregnancy (due to hormonal effects)

Adverse effects

• Hypertension
• Hypokalemia
• Edema
• Headaches
• Fatigue
• Muscle weakness
• Cardiac arrhythmias (with excessive use)

Interactions

• May enhance the effects of corticosteroids
• May increase the risk of hypokalemia with diuretics
• May interact with anticoagulants, increasing the risk of bleeding
• May affect the metabolism of drugs metabolized by CYP3A4

Precautions

• Use with caution in patients with cardiovascular disease
• Monitor blood pressure and potassium levels during prolonged use
• Not recommended for long-term use without medical supervision

Pregnancy

Glycyrrhiza should be avoided during pregnancy as it may cause hormonal effects that could affect fetal development.

Breast-feeding

Consult a healthcare provider before use while breastfeeding, as safety is not well established.

Storage

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

Formulations

• Dried root
• Extracts (liquid and powdered)
• Teas
• Capsules

Indications

• Diabetes management
• Hyperlipidemia
• Digestive disorders
• Appetite stimulation
• Lactation support

Dosage

Children: Refer to pediatric guidelines for specific dosage recommendations based on the child's condition and age.

Adults: Refer to professional guidelines for specific dosage recommendations based on the condition being treated.

Mechanism of action

Fenugreek exerts its effects mainly through its active compounds. It is believed to enhance insulin sensitivity and stimulate insulin secretion, which aids in blood sugar regulation. Additionally, fenugreek may influence lipid metabolism and reduce cholesterol absorption in the gastrointestinal tract. The presence of 4-hydroxyisoleucine, an amino acid derivative, is particularly noted for its role in modulating insulin release.

Pharmacodynamics

The pharmacodynamic effects of fenugreek are attributed to its ability to interact with various metabolic pathways. Its saponins can inhibit the absorption of cholesterol and triglycerides, thereby contributing to lipid-lowering effects. Furthermore, fenugreek's anti-inflammatory and antioxidant properties may improve overall metabolic health and reduce the risk of chronic diseases.

Pharmacokinetics

The pharmacokinetics of fenugreek are not extensively studied, but it is understood that the active compounds are absorbed in the gastrointestinal tract. Once absorbed, they may exert systemic effects, although the exact bioavailability and half-life of fenugreek constituents vary. The metabolism of fenugreek compounds likely occurs in the liver, leading to various metabolites that exert biological effects.

Pregnancy

There is insufficient evidence regarding the safety of graecum during pregnancy. Consult a healthcare provider before use.

Breast-feeding

The effects of graecum during breastfeeding are not well studied. It is advisable to consult a healthcare provider before use.

Storage

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

Dosage

Children: Refer to specific formulations and preparations for recommended dosing in children, as it varies widely by plant and intended use.

Adults: Refer to specific formulations and preparations for recommended dosing, as it varies widely by plant and intended use.

Mechanism of action

The mechanism of action varies significantly depending on the specific root being referred to. Many plant roots contain bioactive compounds such as alkaloids, flavonoids, and glycosides, which can modulate various biochemical pathways in the body. For instance, certain roots may inhibit enzymes involved in inflammation or microbial growth, while others may enhance immune responses or modulate neurotransmitter activity.

Pharmacodynamics

Pharmacodynamics will differ based on the specific root and its active compounds. Generally, roots may exhibit anti-inflammatory, analgesic, antimicrobial, or antioxidant effects. The pharmacodynamic profile will also depend on factors such as dosage, preparation method (e.g., decoction, tincture), and the specific condition being treated. For example, some roots may interact with cellular receptors, while others may exert their effects through modulation of gene expression.

Pharmacokinetics

The pharmacokinetics of a root extract will vary with the specific plant. Typically, factors such as absorption, distribution, metabolism, and excretion are influenced by the chemical composition of the root, the method of preparation, and the route of administration. Many active compounds are absorbed in the gastrointestinal tract, metabolized in the liver, and excreted via urine or feces. The bioavailability of these compounds can be affected by their solubility and stability.

Pregnancy

The safety of root during pregnancy has not been established. Consult a healthcare professional before use.

Breast-feeding

It is unknown whether root is excreted in human milk. Caution is advised when administering to nursing mothers.

Storage

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

Indications

• Dietary supplement for heart health
• Source of essential fatty acids
• Antioxidant support
• Promotion of digestive health
• Management of cholesterol levels

Dosage

Children: Refer to specific seed type and formulation for dosing information, as it can vary widely based on type and intended use.

Adults: Refer to specific seed type and formulation for dosing information, as it can vary widely based on type and intended use.

Mechanism of action

The bioactive compounds in seeds, such as polyunsaturated fatty acids, phytosterols, and antioxidants, exert various effects in the body. For example, omega-3 fatty acids found in flaxseeds can influence lipid metabolism and reduce inflammation by modulating the production of eicosanoids. Antioxidants such as tocopherols and phenolic compounds can scavenge free radicals, reducing oxidative stress.

Pharmacodynamics

Seeds have shown potential benefits, including the modulation of lipid profiles, reduction in inflammatory markers, and improvement in glycemic control. The consumption of seeds may lead to decreased low-density lipoprotein (LDL) cholesterol levels and increased high-density lipoprotein (HDL) cholesterol levels, contributing to cardiovascular health. The dietary fiber in seeds can also aid in digestive health and promote satiety.

Pharmacokinetics

The pharmacokinetics of seeds can vary widely depending on the type of seed and the specific compounds being analyzed. Generally, the bioactive components are digested and absorbed in the gastrointestinal tract, with fatty acids being incorporated into chylomicrons and transported via the lymphatic system. Antioxidants are absorbed in the small intestine and may have systemic effects, while fiber can influence gastrointestinal motility and fermentation in the colon.

Pregnancy

Consult a healthcare provider before use, as safety during pregnancy is not well established.

Breast-feeding

Consult a healthcare provider before use, as safety during breastfeeding is not well established.

Storage

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

Indications

• Calcium deficiency
• Osteoporosis prevention
• Osteomalacia
• Rickets
• Paget's disease
• Hypoparathyroidism

Dosage

Children: Refer to specific product guidelines or consult a healthcare professional for appropriate dosing.

Adults: Refer to specific product guidelines or consult a healthcare professional for appropriate dosing.

Mechanism of action

The calcium carbonate found in shells acts as a calcium supplement, which is essential for many physiological functions, including bone formation and maintenance. It provides the necessary calcium ions that play a critical role in various cellular processes, including muscle contraction, neurotransmitter release, and blood coagulation.

Pharmacodynamics

Calcium carbonate is a source of calcium, a vital mineral that maintains bone density and overall bone health. When ingested, it dissociates in the stomach, releasing calcium ions that are absorbed in the intestines. It contributes to the prevention of osteoporosis and can aid in the treatment of calcium deficiencies. The effectiveness of calcium carbonate is influenced by factors such as the presence of food in the stomach, which may enhance its absorption.

Pharmacokinetics

After oral administration, calcium carbonate is dissolved in gastric acid and then absorbed primarily in the small intestine. The rate of absorption can be affected by the presence of food. The peak plasma concentration of calcium typically occurs within 1 to 3 hours post-ingestion. The elimination half-life of calcium varies, as it is stored in the bones and slowly released back into circulation. The body regulates calcium levels through hormonal control involving parathyroid hormone and calcitonin.

Pregnancy

Consult a healthcare provider for guidance, as safety during pregnancy may vary based on specific shellfish.

Breast-feeding

Consult a healthcare provider for guidance, as safety during breastfeeding may vary based on specific shellfish.

Storage

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

Indications

• Type 2 diabetes mellitus
• Digestive disorders
• Increased appetite
• Inflammatory conditions

Dosage

Children: Refer to established guidelines; specific dosages should be evaluated based on age, weight, and clinical condition.

Adults: Refer to established guidelines; specific dosages may vary based on the formulation and intended use.

Mechanism of action

The active components of fenugreek, such as 4-hydroxyisoleucine, are thought to enhance insulin secretion from the pancreas and improve glucose uptake in peripheral tissues. This action aids in lowering blood glucose levels. Fenugreek also contains saponins and flavonoids that exhibit anti-inflammatory and antioxidant properties, contributing to its overall health benefits.

Pharmacodynamics

Fenugreek's pharmacodynamic effects are primarily attributed to its ability to modulate glucose metabolism and improve insulin sensitivity. The soluble fiber in fenugreek seeds may slow carbohydrate absorption in the intestines, leading to lower postprandial blood glucose levels. Additionally, its anti-inflammatory properties may help reduce inflammation in chronic diseases such as diabetes.

Pharmacokinetics

The pharmacokinetics of fenugreek are not extensively studied; however, it is known that the active compounds are absorbed in the gastrointestinal tract after ingestion. The metabolism and excretion of these compounds are likely influenced by individual variations in gut microbiota and enzyme activity. Fenugreek's effects may vary based on the form used (e.g., seeds, powder, extract) and the dosage.

Adverse effects

• Gastrointestinal upset
• Diarrhea
• Allergic reactions
• Hypoglycemia

Interactions

• May potentiate the effects of anticoagulants
• May interact with antidiabetic medications, requiring dose adjustments

Precautions

• Use with caution in patients with diabetes
• Monitor blood sugar levels in diabetic patients
• Allergic reactions may occur in sensitive individuals

Pregnancy

Trigonella is considered possibly unsafe during pregnancy due to potential hormonal effects and effects on uterine contractions.

Breast-feeding

Trigonella is generally considered safe during breastfeeding, but consult a healthcare provider for individual advice.

Storage

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

Formulations

• Seeds
• Powder
• Extracts

Mechanism of action

**Mechanism of action on blood pressure** Amlodipine is considered a peripheral arterial vasodilator that exerts its action directly on vascular smooth muscle to lead to a reduction in peripheral vascular resistance, causing a decrease in blood pressure. Amlodipine is a dihydropyridine calcium antagonist (calcium ion antagonist or slow-channel blocker) that inhibits the influx of calcium ions into both vascular smooth muscle and cardiac muscle. Experimental studies imply that amlodipine binds to both _dihydropyridine_ and _nondihydropyridine_ binding sites, located on cell membranes. The contraction of cardiac muscle and vascular smooth muscle are dependent on the movement of extracellular calcium ions into these cells by specific ion channels. Amlodipine blocks calcium ion influx across cell membranes with selectivity. A stronger effect of amlodipine is exerted on vascular smooth muscle cells than on cardiac muscle cells. Direct actions of amlodipine on vascular smooth muscle result in reduced blood pressure. **Mechanism of action in angina** The exact mechanism by which amlodipine relieves the symptoms of angina have not been fully elucidated to this date, however, the mechanism of action is likely twofold: Amlodipine has a dilating effect on peripheral arterioles, reducing the total peripheral resistance (afterload) against which the cardiac muscle functions. Since the heart rate remains stable during amlodipine administration, the reduced work of the heart reduces both myocardial energy use and oxygen requirements. Dilatation of the main coronary arteries and coronary arterioles, both in healthy and ischemic areas, is another possible mechanism of amlodipine reduction of blood pressure. The dilatation causes an increase in myocardial oxygen delivery in patients experiencing coronary artery spasm (Prinzmetal's or variant angina) and reduces coronary vasoconstriction caused by smoking. Amlodipine is a dihydropyridine calcium antagonist (calcium ion antagonist or slow-channel blocker) that inhibits the transmembrane influx of calcium ions into vascular smooth muscle and cardiac muscle. Experimental data suggest that amlodipine binds to both dihydropyridine and nondihydropyridine binding sites. The contractile processes of cardiac muscle and vascular smooth muscle are dependent upon the movement of extracellular calcium ions into these cells through specific ion channels. Amlodipine inhibits calcium ion influx across cell membranes selectively, with a greater effect on vascular smooth muscle cells than on cardiac muscle cells. Negative inotropic effects can be detected in vitro but such effects have not been seen in intact animals at therapeutic doses. Serum calcium concentration is not affected by amlodipine. Within the physiologic pH range, amlodipine is an ionized compound (pKa=8.6), and its kinetic interaction with the calcium channel receptor is characterized by a gradual rate of association and dissociation with the receptor binding site, resulting in a gradual onset of effect. Recent studies have suggested that cytokines are capable of modifying cardiovascular function and that drugs used in the treatment of heart failure have various modulating properties on the production of cytokines. More recently, we have found that ouabain induces the production of cytokines. This study was performed to examine the effects of calcium channel blockers on the production of cytokines induced by a cardiac glycoside. Human peripheral blood mononuclear cells (PBMC) were obtained from healthy volunteers. PBMC were cultured in 0.1, 1, 10, and 30 umol/L amlodipine, diltiazem, and nifedipine in presence of 1 umol/L ouabain. After 24 hr of incubation, IL-1alpha, IL-1beta, IL-6, and TNF-alpha were measured in the culture supernatants by enzyme-linked immunosorbent assay. Ouabain induced the production of IL-1alpha, IL-1beta and IL-6, but not of TNF-alpha. Induction of IL-1beta was most prominent. The production of IL-1alpha, and IL-6 wa

Pharmacodynamics

**General pharmacodynamic effects** Amlodipine has a strong affinity for cell membranes, modulating calcium influx by inhibiting selected membrane calcium channels. This drug's unique binding properties allow for its long-acting action and less frequent dosing regimen,. **Hemodynamic effects** After the administration of therapeutic doses of amlodipine to patients diagnosed with hypertension, amlodipine causes vasodilation, which results in a reduction of supine and standing blood pressure. During these blood pressure reductions, there are no clinically significant changes in heart rate or plasma catecholamine levels with long-term use. Acute intravenous administration of amlodipine reduces arterial blood pressure and increases heart rate in patients with chronic stable angina, however, chronic oral administration of amlodipine in clinical studies did not cause clinically significant alterations in heart rate or blood pressures in patients diagnosed with angina and normal blood pressure. With long-term, once daily oral administration, antihypertensive effectiveness is maintained for at least 24 hours. **Electrophysiologic effects** Amlodipine does not change sinoatrial (SA) nodal function or atrioventricular (AV) conduction in animals or humans. In patients who were diagnosed with chronic stable angina, the intravenous administration of 10 mg of amlodipine did not cause clinically significant alterations A-H and H-V conduction and sinus node recovery time after cardiac pacing. Patients administered amlodipine with concomitant beta-blockers produced similar results. In clinical trials in which amlodipine was given in combination with beta-blockers to patients diagnosed with hypertension or angina, no adverse effects on electrocardiographic parameters were noted. In clinical studies comprised of angina patients alone, amlodipine did not change electrocardiographic intervals or produce high degrees of AV block. **Effects on angina** Amlodipine relieves the symptoms of chest pain associated with angina. In patients diagnosed with angina, daily administration of a single amlodipine dose increases total exercise time, the time to angina onset, and the time to 1 mm ST-segment depression on ECG studies, decreases anginal attack frequency, and decreases the requirement for nitroglycerin tablets.

Mechanism of action

Irbesartan prevents angiotensin II binding to the AT₁ receptor in tissues like vascular smooth muscle and the adrenal gland. Irbesartan and its active metabolite bind the AT₁ receptor with 8500 times more affinity than they bind to the AT₂ receptor. Irbesartan's prevention of angiotensin II binding causes vascular smooth muscle relaxation and prevents the secretion of aldosterone, lowering blood pressure. Angiotensin II would otherwise bind to the AT₁ receptor, inducing vasoconstriction and aldosterone secretion, raising blood pressure. Angiotensin II is a potent vasoconstrictor formed from angiotensin I in a reaction catalyzed by angiotensin-converting enzyme (ACE, kininase II). Angiotensin II is the principal pressor agent of the renin-angiotensin system (RAS) and also stimulates aldosterone synthesis and secretion by adrenal cortex, cardiac contraction, renal resorption of sodium, activity of the sympathetic nervous system, and smooth muscle cell growth. Irbesartan blocks the vasoconstrictor and aldosterone-secreting effects of angiotensin II by selectively binding to the AT1 angiotensin II receptor. There is also an AT2 receptor in many tissues, but it is not involved in cardiovascular homeostasis. Irbesartan is a specific competitive antagonist of AT1 receptors with a much greater affinity (more than 8500-fold) for the AT1 receptor than for the AT2 receptor and no agonist activity. Blockade of the AT1 receptor removes the negative feedback of angiotensin II on renin secretion, but the resulting increased plasma renin activity and circulating angiotensin II do not overcome the effects of irbesartan on blood pressure. Irbesartan does not inhibit ACE or renin or affect other hormone receptors or ion channels known to be involved in the cardiovascular regulation of blood pressure and sodium homeostasis. Because irbesartan does not inhibit ACE, it does not affect the response to bradykinin; whether this has clinical relevance is not known.

Pharmacodynamics

Irbesartan is an angiotensin receptor blocker used to treat hypertension and diabetic nephropathy. It has a long duration of action as it is usually taken once daily and a wide therapeutic index as doses may be as low as 150mg daily but doses of 900mg/day were well tolerated in healthy human subjects.