FERTILO LADY DENK CAPSULES
Vitamin C /Vitamin B6/Folic acid/ Iron/Zinc/ Iodine / Acai berry extract/ L-Arginine
What it does
Acai is a fruit that is often used as a health supplement. It is known for its potential antioxidant properties.
Commonly used for: supports overall health, may help with weight loss, promotes heart health
Read more in plain English ↓Plain-language summary for general understanding - not medical advice. Always follow your pharmacist/doctor.
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Sourcing - Kenya onlyRegistration & product details
Source: Food and Drugs Authority · fetched 2026-04-18 08:32:57 · updated 2026-10-20 04:00:12
About acai
Acai is a fruit that is often used as a health supplement. It is known for its potential antioxidant properties.
What it treats
- supports overall health
- may help with weight loss
- promotes heart health
How it works
Acai berries are rich in antioxidants, which help protect the body from damage caused by harmful substances called free radicals.
Who it's for
Adults looking to improve their general health and wellbeing.
AI-assisted summary grounded in BNF data - general information only, not medical advice. Always confirm with your pharmacist or doctor.
About ascorbic acid
Ascorbic acid, commonly known as Vitamin C, is essential for overall health and helps the body in many ways.
What it treats
- scurvy
- immune system support
- wound healing
- antioxidant support
How it works
Ascorbic acid helps in the production of collagen, a protein important for skin, blood vessels, and connective tissues, and acts as an antioxidant to protect cells.
Who it's for
It is suitable for people needing vitamin C, such as those with a deficiency or increased requirements due to illness or stress.
AI-assisted summary grounded in BNF data - general information only, not medical advice. Always confirm with your pharmacist or doctor.
About berry
Berry is a natural product often used for its health benefits.
What it treats
- general health improvement
- supporting immune function
How it works
Berry is believed to contain antioxidants and nutrients that help boost overall health.
Who it's for
People looking to enhance their wellness and support their immune system.
AI-assisted summary grounded in BNF data - general information only, not medical advice. Always confirm with your pharmacist or doctor.
About extract
This medicine is an extract that is used for various health conditions.
What it treats
- general health improvement
- nutritional support
How it works
The extract may provide health benefits by supplying essential nutrients or compounds that support bodily functions.
Who it's for
This medicine is suitable for individuals looking to improve their overall health or address specific nutritional needs.
AI-assisted summary grounded in BNF data - general information only, not medical advice. Always confirm with your pharmacist or doctor.
About folate
Folate is a type of B vitamin that is important for the production of red blood cells and helps prevent certain types of birth defects.
What it treats
- prevention of neural tube defects in pregnancy
- treatment of folate deficiency
- supporting overall health
How it works
Folate helps the body make DNA and is essential for the growth and division of cells.
Who it's for
Folate is suitable for pregnant women, those planning to become pregnant, and individuals with low levels of folate.
AI-assisted summary grounded in BNF data - general information only, not medical advice. Always confirm with your pharmacist or doctor.
About iodine
Iodine is a vital mineral that helps the body produce thyroid hormones, which are essential for metabolism and overall health.
What it treats
- prevention of iodine deficiency
- supporting thyroid health
- treatment of certain thyroid disorders
How it works
Iodine is necessary for the production of thyroid hormones, which help regulate many body functions including growth, metabolism, and energy levels.
Who it's for
Iodine is recommended for people who need to boost their iodine levels, such as those with certain dietary restrictions or thyroid issues.
AI-assisted summary grounded in BNF data - general information only, not medical advice. Always confirm with your pharmacist or doctor.
About l-arginine
L-arginine is an amino acid that helps improve blood flow and may support heart health.
What it treats
- angina (chest pain)
- heart disease
- erectile dysfunction
- high blood pressure (hypertension)
- wound healing
How it works
L-arginine helps the body produce nitric oxide, which relaxes blood vessels and improves blood circulation.
Who it's for
L-arginine may be suitable for adults looking to improve their cardiovascular health or manage related conditions.
AI-assisted summary grounded in BNF data - general information only, not medical advice. Always confirm with your pharmacist or doctor.
About pyridoxine
Pyridoxine, also known as vitamin B6, is important for many bodily functions including the metabolism of proteins and the creation of neurotransmitters.
What it treats
- pyridoxine deficiency
- nerve pain (neuropathy)
- certain types of anemia
How it works
Pyridoxine helps the body use proteins and carbohydrates effectively and is essential for the production of chemicals that transmit signals in the brain.
Who it's for
Pyridoxine is for individuals who need to increase their vitamin B6 levels due to dietary deficiencies or certain health conditions.
AI-assisted summary grounded in BNF data - general information only, not medical advice. Always confirm with your pharmacist or doctor.
Clinical monograph: Pyridoxinehydrochloride
BNF-referencedPyridoxine hydrochloride, also known as Vitamin B6, is a water-soluble vitamin that plays a crucial role in various bodily functions, including amino acid metabolism, neurotransmitter synthesis, and the regulation of gene expression. It is essential for the proper function of enzymes involved in the metabolism of proteins, carbohydrates, and fats. Pyridoxine is commonly used to treat and prevent vitamin B6 deficiencies and is also indicated in specific neuropathies, including those induced by isoniazid and penicillamine.
Indications
- Vitamin B6 deficiency
- Isoniazid-induced neuropathy (prophylaxis and treatment)
- Idiopathic sideroblastic anaemia
- Prevention of penicillamine-induced neuropathy in Wilson's disease
- Metabolic diseases such as cystathioninuria and homocystinuria
- Premenstrual syndrome
Mechanism of action
Pyridoxine hydrochloride is converted in the body to pyridoxal phosphate, which is the active form of vitamin B6. It serves as a cofactor for more than 100 enzymatic reactions, particularly those involved in the metabolism of amino acids, the synthesis of neurotransmitters (such as serotonin, dopamine, and gamma-aminobutyric acid), and the production of hemoglobin. Its role in neurotransmitter synthesis makes it crucial for normal brain function and mood regulation.
Pharmacodynamics
Pyridoxine hydrochloride exerts its effects by facilitating the conversion of amino acids into neurotransmitters and is involved in the synthesis of heme. It impacts the metabolism of tryptophan to serotonin and is essential for the production of norepinephrine and gamma-aminobutyric acid, which are vital for proper neurological function. Deficiency of vitamin B6 can lead to neurological symptoms, including peripheral neuropathy and cognitive disturbances.
Pharmacokinetics
Pyridoxine hydrochloride is readily absorbed from the gastrointestinal tract. It is primarily metabolized in the liver, where it is converted to its active form, pyridoxal phosphate. The elimination half-life of pyridoxine is approximately 15-20 days, and it is excreted primarily through the urine. Renal impairment may affect the metabolism and excretion of pyridoxine, necessitating dose adjustments.
Contra-indications
- Hyperkalaemia
- Severe liver damage
Adverse effects
- Peripheral neuritis
- Hepatitis
- Hypoglycaemia
- Urine discolouration
Interactions
- Potassium aminobenzoate
- Isoniazid
Precautions
- Caution in renal impairment (increased risk of hyperkalaemia)
- Interrupt treatment during periods of low food intake (such as fasting, anorexia, and nausea) to reduce risk of hypoglycaemia
- Monitor liver function tests monthly during high-dose therapy
Pregnancy
Manufacturer advises avoiding use in pregnancy due to potential risk of birth defects; however, no adverse effects have been reported at normal dietary levels.
Breast-feeding
Theoretical risk of toxicity in infants if mothers take large doses.
Storage
Store in a cool, dry place away from direct sunlight. Keep out of reach of children.
Formulations
- Pyridoxine hydrochloride 10 mg tablets
- Pyridoxine hydrochloride 20 mg tablets
- Pyridoxine hydrochloride 50 mg tablets
- Pyridoxine hydrochloride oral solution 20 mg per 1 ml
AI-synthesized from BNF references - general information only, not a substitute for professional medical advice or the current BNF. Verify doses with a pharmacist.
Clinical monograph: Ascorbicacid
BNF-referencedAscorbic acid, also known as Vitamin C, is a water-soluble vitamin essential for various bodily functions, including the synthesis of collagen, neurotransmitters, and the immune response. It acts as an antioxidant, protecting cells from damage by free radicals.
Indications
- Vitamin C deficiency
- Scurvy
- Adjunct therapy in iron overload conditions
Dosage
Children: Child 1 month–3 years: 125–250 mg daily in 1–2 divided doses; Child 4–11 years: 250–500 mg daily in 1–2 divided doses; Child 12–17 years: 0.5–1 g daily in 1–2 divided doses.
Adults: 500 mg daily, taken in 1-2 divided doses, depending on the clinical condition and dietary needs.
Mechanism of action
Ascorbic acid functions primarily as a reducing agent, facilitating enzymatic reactions in the body, including the hydroxylation of proline and lysine in collagen synthesis. It also plays a role in the absorption of iron from the gastrointestinal tract and enhances the immune response.
Pharmacodynamics
Ascorbic acid is crucial for the maintenance of connective tissue and is involved in the metabolism of several amino acids. Its antioxidant properties help to mitigate oxidative stress and may play a role in reducing the risk of chronic diseases.
Pharmacokinetics
Ascorbic acid is absorbed in the intestines and is widely distributed throughout the body. The renal clearance of ascorbic acid is dose-dependent, with higher doses leading to increased excretion. The half-life varies but is generally around 15 to 30 minutes in healthy individuals, with tissue saturation levels influencing its retention.
Contra-indications
- Hypercalcaemia
- Hyperoxaluria
- Patients with cardiac dysfunction
Adverse effects
- Abdominal pain
- Headache
- Nausea
- Vomiting
- Diarrhoea
- Constipation
- Weight loss
- Polyuria
- Sweating
- Thirst
- Vertigo
Interactions
- Increases risk of cardiovascular adverse effects with iron chelators
- Increases risk of cardiovascular adverse effects with deferiprone
- Increases risk of cardiovascular adverse effects with desferrioxamine
Precautions
- Use with caution in patients with iron overload
- Monitor for symptoms of overdose
Pregnancy
High doses teratogenic in animals but therapeutic doses unlikely to be harmful.
Storage
Store in a cool, dry place away from direct sunlight.
Formulations
- Ascorbic acid 50 mg tablets
- Ascorbic acid 100 mg tablets
- Ascorbic acid 200 mg tablets
- Ascorbic acid 250 mg tablets
- Ascorbic acid 500 mg capsules
AI-synthesized from BNF references - general information only, not a substitute for professional medical advice or the current BNF. Verify doses with a pharmacist.
Clinical monograph: acai
Acai is a fruit derived from the acai palm, native to Central and South America, particularly Brazil. It is widely recognized for its high antioxidant content, particularly anthocyanins, and is often marketed as a superfood. Acai berries are typically consumed in the form of pulp, juice, or as a dietary supplement. They are thought to support overall health, promote cardiovascular health, and aid in weight management.
Indications
- Antioxidant support
- Cardiovascular health
- Weight management
- Anti-inflammatory effects
- General wellness
Dosage
Children: Refer to product-specific guidelines; consult a healthcare provider for appropriate use in children.
Adults: Refer to product-specific guidelines as there is no standardized dose for acai; commonly used forms include juices and supplements with varying concentrations.
Mechanism of action
Acai berries exert their effects primarily through their high antioxidant capacity. The anthocyanins and other flavonoids present in acai are believed to scavenge free radicals, reduce oxidative stress, and improve endothelial function. These actions may contribute to improved cardiovascular health and potential anti-inflammatory effects.
Pharmacodynamics
The pharmacodynamic effects of acai are largely attributed to its antioxidant properties. Studies suggest that acai can modulate various signaling pathways related to inflammation and oxidative stress, potentially influencing health outcomes associated with chronic diseases. The berry's phytochemicals may also have mild effects on lipid metabolism, though research in this area is still ongoing.
Pharmacokinetics
The pharmacokinetics of acai are not extensively studied. However, it is known that the bioavailability of polyphenols, including those found in acai, can be influenced by factors such as food matrix, preparation method, and individual metabolism. After ingestion, these compounds are metabolized in the liver, and their antioxidant effects can be observed in plasma levels after consumption. The effects and metabolites may vary based on the formulation and individual differences.
Adverse effects
- Gastrointestinal disturbances
- Allergic reactions
- Potential interactions with anticoagulants
Interactions
- May interact with anticoagulants and antiplatelet medications
- Potential interactions with diabetes medications
Precautions
- Use with caution in patients with allergies to berries or related fruits
- Monitor blood glucose levels in diabetic patients
Pregnancy
There is insufficient reliable information on the safety of acai during pregnancy. It is advisable to avoid use unless recommended by a healthcare professional.
Breast-feeding
There is insufficient reliable information on the safety of acai during breastfeeding. It is advisable to avoid use unless recommended by a healthcare professional.
Storage
Store in a cool, dry place away from direct sunlight.
Formulations
- Powder
- Capsules
- Juice
AI-synthesized from BNF references - general information only, not a substitute for professional medical advice or the current BNF. Verify doses with a pharmacist.
Clinical monograph: berry
Berries are small, juicy fruits that are often rich in vitamins, antioxidants, and phytochemicals. They are widely consumed for their health benefits and are commonly used in dietary supplements and functional foods. Common types of berries include strawberries, blueberries, raspberries, and blackberries. They are known for their potential protective effects against various diseases due to their high content of flavonoids, vitamins, and dietary fiber.
Indications
- Antioxidant support
- Anti-inflammatory effects
- Cardiovascular health
- Cognitive function enhancement
- Support in weight management
- Blood sugar regulation
Dosage
Children: Refer to established dietary guidelines or recommendations for berry consumption in children, as no specific dose has been established for medicinal use.
Adults: Refer to established dietary guidelines or recommendations for berry consumption, as no specific dose has been established for medicinal use.
Mechanism of action
Berries exert their beneficial effects primarily through their high antioxidant capacity, primarily due to compounds such as anthocyanins, flavonoids, and vitamin C. These compounds help reduce oxidative stress and inflammation in the body. Additionally, the fiber content in berries aids in digestion and contributes to the regulation of blood glucose levels.
Pharmacodynamics
The pharmacodynamic effects of berries include antioxidant activity, anti-inflammatory properties, and modulation of metabolic processes. Their consumption has been associated with improved cardiovascular health, cognitive function, and reduced risk of chronic diseases such as diabetes and obesity. The bioactive compounds in berries may enhance endothelial function, improve insulin sensitivity, and influence lipid metabolism.
Pharmacokinetics
The pharmacokinetics of berry compounds vary depending on the specific type and chemical structure of the bioactive constituents. Generally, after ingestion, flavonoids and other polyphenols are absorbed in the gastrointestinal tract, undergo metabolism in the liver, and are then distributed throughout the body. The bioavailability of these compounds can be influenced by the presence of other food components, individual metabolism, and the specific berry consumed.
Pregnancy
The safety of berry consumption during pregnancy varies by type; consult a healthcare professional for specific advice.
Breast-feeding
Generally considered safe, but specific berries should be discussed with a healthcare provider.
Storage
Store in a cool, dry place, away from direct sunlight. Fresh berries should be refrigerated.
AI-synthesized from BNF references - general information only, not a substitute for professional medical advice or the current BNF. Verify doses with a pharmacist.
Clinical monograph: extract
Extracts are concentrated preparations obtained from plants, herbs, or other natural sources through various extraction methods such as solvent extraction, steam distillation, or cold pressing. They are used for their therapeutic properties in herbal medicine and can contain a variety of bioactive compounds including alkaloids, flavonoids, terpenes, and essential oils. The specific effects and uses of an extract depend on its source material and the compounds it contains.
Indications
- General wellness support
- Anti-inflammatory effects
- Antioxidant activity
- Digestive aid
- Support for immune function
Dosage
Children: Paediatric dosing should be determined based on the specific extract and its intended use. Consultation with a healthcare provider is recommended for accurate dosing.
Adults: Dosage varies widely depending on the specific extract and formulation. It is essential to follow the manufacturer's instructions or consult a healthcare professional for appropriate dosing.
Mechanism of action
The mechanism of action of herbal extracts can vary significantly based on their constituents. Commonly, they exert their effects through multiple pathways including modulation of neurotransmitter systems, interference with inflammatory processes, or direct antioxidant activity. Some extracts may activate certain receptors or inhibit enzymes related to disease processes.
Pharmacodynamics
The pharmacodynamics of extracts is complex due to the presence of multiple active compounds which can have synergistic or antagonistic effects. These compounds may influence cellular signaling pathways, alter gene expression, or modulate immune response. The overall pharmacological profile is determined by the specific composition of the extract, its concentration, and the biological target it interacts with.
Pharmacokinetics
The pharmacokinetics of extracts involves absorption, distribution, metabolism, and excretion of the active compounds. Generally, herbal extracts are absorbed in the gastrointestinal tract, with bioavailability influenced by factors such as formulation, the presence of food, and individual metabolic differences. Compounds may undergo hepatic metabolism, and elimination can occur through urine or feces, depending on their chemical nature.
Pregnancy
Consult a healthcare professional before use, as the safety of the extract during pregnancy has not been established.
Breast-feeding
Consult a healthcare professional before use, as the safety of the extract during breastfeeding has not been established.
Storage
Store in a cool, dry place away from direct sunlight. Keep out of reach of children.
AI-synthesized from BNF references - general information only, not a substitute for professional medical advice or the current BNF. Verify doses with a pharmacist.
Clinical monograph: folate
BNF-referencedFolate, also known as vitamin B9, is a water-soluble vitamin essential for the synthesis of nucleic acids and amino acids. It plays a crucial role in cellular division and growth, making it particularly important during periods of rapid growth such as pregnancy and infancy. Folate is naturally found in various foods, including leafy green vegetables, fruits, and legumes. It is also available as a dietary supplement and is often used to prevent or treat folate deficiency, which can lead to conditions such as megaloblastic anemia.
Indications
- Folate deficiency
- Megaloblastic anemia
- Prevention of neural tube defects in pregnancy
- Supplementation in patients on certain medications (e.g., methotrexate)
Dosage
Children: Refer to the BNF for Children for appropriate pa
Adults: Refer to specific guidelines or the BNF for appropriate adult dosing based on the indication.
Mechanism of action
Folate functions as a coenzyme in the conversion of homocysteine to methionine, a process that is vital for DNA synthesis and repair. It is involved in the one-carbon metabolism pathway, where it acts as a carrier of one-carbon units necessary for the synthesis of purines and thymidylate, thus supporting the production of nucleotides and DNA. This mechanism is particularly important in rapidly dividing cells.
Pharmacodynamics
Folate is critical for the formation of red blood cells and the proper functioning of the nervous system. It aids in the production of nucleic acids, which are essential for cell proliferation. Folate deficiency can lead to impaired DNA synthesis, resulting in megaloblastic anemia characterized by the presence of large, immature red blood cells in the bloodstream. Adequate folate levels are also associated with reduced risk of neural tube defects in developing fetuses.
Pharmacokinetics
Folate is absorbed in the proximal part of the small intestine, primarily in the jejunum, and is transported in the bloodstream bound to plasma proteins. It undergoes hepatic metabolism and is stored mainly in the liver. The elimination half-life varies, but dietary folate can be retained in the body for several weeks. Excess folate is excreted through the urine. The bioavailability of folate from food sources is lower compared to synthetic folic acid found in supplements.
Interactions
- folates+fluorouracil: Severe (increases risk of toxicity)
- folates+antiepileptics: Moderate (decreases concentration)
- folates+fosphenytoin: Moderate (decreases concentration)
- folates+phenobarbital: Moderate (decreases concentration)
- folates+phenytoin: Moderate (decreases concentration)
- folates+primidone: Moderate (decreases concentration)
- sulfasalazine+folates: Unknown (decreases absorption)
Pregnancy
Folate is essential for fetal development and is often recommended to prevent neural tube defects.
Breast-feeding
Folate is generally safe during breastfeeding, as it is important for both maternal and infant health.
Storage
Store in a cool, dry place, away from direct sunlight.
Formulations
- Tablets
- Injection
AI-synthesized from BNF references - general information only, not a substitute for professional medical advice or the current BNF. Verify doses with a pharmacist.
Clinical monograph: iodine
BNF-referencedIodine (I2) is a trace element essential for the synthesis of thyroid hormones. It is crucial for normal thyroid function and is involved in various metabolic processes. Iodine supplementation is often used to prevent and treat iodine deficiency disorders, including goiter and hypothyroidism, particularly in areas where dietary intake is insufficient.
Indications
- Iodine deficiency
- Goiter
- Hypothyroidism
- Thyroiditis
- Fibrocystic breast disease
Dosage
Children: Refer to the BNF for Children for appropriate dosing guidelines based on age and weight.
Adults: Refer to the BNF for appropriate dosing guidelines based on condition and clinical judgment.
Mechanism of action
Molecular iodine inhibits the induction and promotion of carcinogenesis in mammary tissues and has shown beneficial effects in fibrocystic breast disease. It temporarily decreases thyroid hormone production through the acute Wolff-Chaikoff effect, followed by a return to normal hormone synthesis due to down regulation of the sodium-iodide symport. This mechanism can lead to a transient hypothyroid state in some individuals with underlying thyroid conditions.
Pharmacodynamics
Iodine is vital for the synthesis of thyroid hormones thyroxine (T4) and triiodothyronine (T3). It affects the metabolism of amine-derived hormones and plays a role in amino acid metabolism. The acute excess of iodide can lead to decreased circulating levels of T4 and T3 in susceptible individuals, while most people can escape this effect and maintain normal thyroid function.
Pharmacokinetics
Iodine is absorbed primarily in the gastrointestinal tract and is distributed throughout the body, particularly in the thyroid gland, where it is concentrated for hormone synthesis. The kidney plays a significant role in the excretion of excess iodine. The half-life of iodine in the body varies and can be influenced by dietary intake and underlying health conditions.
Adverse effects
- Hypothyroidism
- Hyperthyroidism
- Iodine allergy
- Gastrointestinal disturbances
Interactions
- Thyroid hormones
- Antithyroid drugs
- Lithium
- Diuretics
Precautions
- Use with caution in patients with thyroid dysfunction
- Monitor thyroid function periodically during treatment
- Pregnant or breastfeeding women should consult a healthcare provider before use
Pregnancy
Iodine is essential for fetal thyroid hormone synthesis, but excessive iodine intake should be avoided.
Breast-feeding
Iodine is excreted in breast milk; consult a healthcare provider regarding supplementation.
Storage
Store in a cool, dry place away from light.
Formulations
- Iodine solution
- Iodine tincture
- Potassium iodide tablets
AI-synthesized from BNF references - general information only, not a substitute for professional medical advice or the current BNF. Verify doses with a pharmacist.
Clinical monograph: larginine
BNF-referencedL-arginine is a semi-essential amino acid that serves as a precursor for nitric oxide (NO) production in the body. It plays critical roles in various physiological processes, including cardiovascular function, immune response, and tissue repair. L-arginine supplementation is often utilized for its potential benefits in enhancing blood flow, promoting wound healing, and supporting muscle growth.
Indications
- Cardiovascular diseases
- Erectile dysfunction
- Peripheral arterial disease
- Wound healing
- Muscle growth and recovery
- Immune system support
Dosage
Children: For paediatric dosing, it is important to refer to the BNF for Children for appropriate guidelines based on the child's age, weight, and clinical condition.
Adults: The typical dosage for adults varies based on the condition being treated, but common oral doses range from 2 to 30 grams per day, divided into multiple doses. For specific dosing recommendations, please refer to the BNF.
Mechanism of action
L-arginine is converted to nitric oxide by nitric oxide synthase (NOS), which is crucial for vascular function and blood flow regulation. NO activates guanylate cyclase, leading to increased levels of cyclic GMP, a secondary messenger that mediates vasodilation and other cellular responses. This pathway is vital in both the cardiovascular and immune systems, with different isoforms of NOS (eNOS, nNOS, iNOS) contributing to various physiological effects.
Pharmacodynamics
L-arginine has been shown to enhance immune responses, improve wound healing, stimulate growth hormone release, and support muscle hypertrophy and tissue repair. Its role in nitric oxide production aids in vasodilation, improving blood circulation and oxygen delivery to tissues, which is essential for recovery and regeneration.
Pharmacokinetics
L-arginine is absorbed from the gastrointestinal tract, with peak plasma concentrations occurring within 1-2 hours after oral administration. It is metabolized primarily in the liver and kidneys, with a half-life of approximately 1-2 hours. The bioavailability of L-arginine can be influenced by dietary intake and metabolic conditions.
Adverse effects
- Gastrointestinal disturbances
- Nausea
- Diarrhea
- Abdominal pain
- Hypotension
- Allergic reactions
Interactions
- Antihypertensive agents may have additive effects leading to increased hypotension
- Sildenafil and other medications for erectile dysfunction may have enhanced effects when used with L-arginine
Precautions
- Caution in patients with a history of asthma or allergies
- Use with caution in patients with hypotension
- Monitor blood pressure in patients taking antihypertensive medications
Pregnancy
The safety of L-arginine in pregnancy has not been established. Consult a healthcare provider before use.
Breast-feeding
L-arginine is excreted in breast milk, and its safety during breastfeeding is not well established. Consult a healthcare provider.
Storage
Store in a cool, dry place away from direct sunlight. Keep out of reach of children.
Formulations
- Oral tablets
- Powder for oral solution
- Capsules
AI-synthesized from BNF references - general information only, not a substitute for professional medical advice or the current BNF. Verify doses with a pharmacist.
Clinical monograph: pyridoxine
BNF-referencedPyridoxine, also known as vitamin B6, is a water-soluble vitamin that is essential for various biochemical processes in the body. It comprises a group of three related compounds, including pyridoxine, pyridoxal, and pyridoxamine, along with their phosphorylated derivatives. Pyridoxine primarily serves as a precursor to pyridoxal 5'-phosphate, the active coenzyme form that plays a vital role in amino acid metabolism, glycogen synthesis, and the production of neurotransmitters such as serotonin and dopamine.
Indications
- Vitamin B6 deficiency
- Peripheral neuropathy associated with isoniazid therapy
- Supplementation in specific dietary deficiencies
Dosage
Children: Refer to the BNF for Children for specific paediatric dosing guidance.
Adults: Refer to the BNF for specific dosing details, typically 10-50 mg daily for deficiency.
Mechanism of action
Pyridoxine, mainly in its active form pyridoxal 5'-phosphate, is involved in numerous biochemical reactions, including amino acid metabolism, glycogen breakdown, nucleic acid synthesis, and the production of key neurotransmitters. It aids in the synthesis of hemoglobin and sphingolipids, and its deficiency can impair several physiological processes, including immune response and vascular health.
Pharmacodynamics
Pyridoxine is utilized for the prevention and treatment of vitamin B6 deficiency, particularly in individuals undergoing treatment with isoniazid, which can deplete vitamin B6 levels. It may also have beneficial effects on blood pressure and lipid profiles, as studies have shown it can lower both systolic and diastolic blood pressure, inhibit platelet aggregation, and improve cholesterol levels. Additionally, it plays a role in enhancing immune function and protecting endothelial cells from injury.
Pharmacokinetics
Pyridoxine is rapidly absorbed from the gastrointestinal tract. It is transported to tissues where it is phosphorylated to its active form, pyridoxal 5'-phosphate. The vitamin is primarily excreted in urine as pyridoxine and its metabolites. Its half-life varies depending on the individual’s nutritional status and other factors. Adequate dietary intake is essential for maintaining optimal levels in the body.
Pregnancy
Pyridoxine is generally considered safe during pregnancy. However, high doses should be avoided unless specifically prescribed.
Breast-feeding
Pyridoxine is excreted in breast milk, but at normal dietary levels it is considered safe for breastfeeding mothers.
Storage
Store in a cool, dry place away from direct sunlight. Keep out of reach of children.
Formulations
- Tablets
- Oral solution
- Injectable form
AI-synthesized from BNF references - general information only, not a substitute for professional medical advice or the current BNF. Verify doses with a pharmacist.
Molecular reference: folate
PubChem CID 135405876Molecular formula: C19H19N7O6
Source: PubChem (NCBI) · pathways from PathBank, Reactome, WikiPathways & PharmGKB.
Molecular reference: iodine
PubChem CID 807Molecular formula: I2
Mechanism of action
Molecular iodine is known to inhibit the induction and promotion of N-methyl-n-nitrosourea-induced mammary carcinogenesis, to regress 7,12-dimethylbenz(a)anthracene-induced breast tumors in rats.It has also been shown to have beneficial effects in fibrocystic human breast disease. An acute iodide excess (above the preexisting dietary intake) transiently decreases the production of thyroid hormones in the thyroid gland; this is referred to as the acute Wolff-Chaikoff effect. In normal people, this is followed by a return to normal levels of hormone synthesis, referred to as escape from the acute Wolff-Chaikoff effect, without a significant change in circulating hormone levels. Escape is thought to be the result of down regulation of the sodium-iodide symport (NIS), the iodide transporter in the thyroid gland, resulting in a decrease in the intrathyroidal iodine and the resumption of normal hormone synthesis. An acute or chronic excess of iodide can also decrease circulating T4 and T3 levels and induce a hypothyroid state in some people who have underlying thyroid disorders. These effects are the result of a failure to escape from the acute Wolff-Chaikoff effect. Most people who experience iodine-induced hypothyroidism recover when the excess iodine intake is discontinued.
Biological pathways
Source: PubChem (NCBI) · pathways from PathBank, Reactome, WikiPathways & PharmGKB.
Molecular reference: l-arginine
PubChem CID 6322Molecular formula: C6H14N4O2
Mechanism of action
Many of supplemental L-arginine's activities, including its possible anti-atherogenic actions, may be accounted for by its role as the precursor to nitric oxide or NO. NO is produced by all tissues of the body and plays very important roles in the cardiovascular system, immune system and nervous system. NO is formed from L-arginine via the enzyme nitric oxide synthase or synthetase (NOS), and the effects of NO are mainly mediated by 3,'5' -cyclic guanylate or cyclic GMP. NO activates the enzyme guanylate cyclase, which catalyzes the synthesis of cyclic GMP from guanosine triphosphate or GTP. Cyclic GMP is converted to guanylic acid via the enzyme cyclic GMP phosphodiesterase. NOS is a heme-containing enzyme with some sequences similar to cytochrome P-450 reductase. Several isoforms of NOS exist, two of which are constitutive and one of which is inducible by immunological stimuli. The constitutive NOS found in the vascular endothelium is designated eNOS and that present in the brain, spinal cord and peripheral nervous system is designated nNOS. The form of NOS induced by immunological or inflammatory stimuli is known as iNOS. iNOS may be expressed constitutively in select tissues such as lung epithelium. All the nitric oxide synthases use NADPH (reduced nicotinamide adenine dinucleotide phosphate) and oxygen (O2) as cosubstrates, as well as the cofactors FAD (flavin adenine dinucleotide), FMN (flavin mononucleotide), tetrahydrobiopterin and heme. Interestingly, ascorbic acid appears to enhance NOS activity by increasing intracellular tetrahydrobiopterin. eNOS and nNOS synthesize NO in response to an increased concentration of calcium ions or in some cases in response to calcium-independent stimuli, such as shear stress. In vitro studies of NOS indicate that the Km of the enzyme for L-arginine is in the micromolar range. The concentration of L-arginine in endothelial cells, as well as in other cells, and in plasma is in the millimolar range. What this means is that, under physiological conditions, NOS is saturated with its L-arginine substrate. In other words, L-arginine would not be expected to be rate-limiting for the enzyme, and it would not appear that supraphysiological levels of L-arginine which could occur with oral supplementation of the amino acid^would make any difference with regard to NO production. The reaction would appear to have reached its maximum level. However, in vivo studies have demonstrated that, under certain conditions, e.g. hypercholesterolemia, supplemental L-arginine could enhance endothelial-dependent vasodilation and NO production.
Pharmacodynamics
Studies have shown that is has improved immune responses to bacteria, viruses and tumor cells; promotes wound healing and regeneration of the liver; causes the release of growth hormones; considered crucial for optimal muscle growth and tissue repair.
Biological pathways
Source: PubChem (NCBI) · pathways from PathBank, Reactome, WikiPathways & PharmGKB.
Molecular reference: pyridoxine
PubChem CID 1054Molecular formula: C8H11NO3
Mechanism of action
Vitamin B6 is the collective term for a group of three related compounds, pyridoxine (PN), pyridoxal (PL) and pyridoxamine (PM), and their phosphorylated derivatives, pyridoxine 5'-phosphate (PNP), pyridoxal 5'-phosphate (PLP) and pyridoxamine 5'-phosphate (PMP). Although all six of these compounds should technically be referred to as vitamin B6, the term vitamin B6 is commonly used interchangeably with just one of them, pyridoxine. Vitamin B6, principally in its biologically active coenzyme form pyridoxal 5'-phosphate, is involved in a wide range of biochemical reactions, including the metabolism of amino acids and glycogen, the synthesis of nucleic acids, hemogloblin, sphingomyelin and other sphingolipids, and the synthesis of the neurotransmitters serotonin, dopamine, norepinephrine and gamma-aminobutyric acid (GABA).
Pharmacodynamics
Vitamin B6 (pyridoxine) is a water-soluble vitamin used in the prophylaxis and treatment of vitamin B6 deficiency and peripheral neuropathy in those receiving isoniazid (isonicotinic acid hydrazide, INH). Vitamin B6 has been found to lower systolic and diastolic blood pressure in a small group of subjects with essential hypertension. Hypertension is another risk factor for atherosclerosis and coronary heart disease. Another study showed pyridoxine hydrochloride to inhibit ADP- or epinephrine-induced platelet aggregation and to lower total cholesterol levels and increase HDL-cholesterol levels, again in a small group of subjects. Vitamin B6, in the form of pyridoxal 5'-phosphate, was found to protect vascular endothelial cells in culture from injury by activated platelets. Endothelial injury and dysfunction are critical initiating events in the pathogenesis of atherosclerosis. Human studies have demonstrated that vitamin B6 deficiency affects cellular and humoral responses of the immune system. Vitamin B6 deficiency results in altered lymphocyte differentiation and maturation, reduced delayed-type hypersensitivity (DTH) responses, impaired antibody production, decreased lymphocyte proliferation and decreased interleukin (IL)-2 production, among other immunologic activities.
Biological pathways
Source: PubChem (NCBI) · pathways from PathBank, Reactome, WikiPathways & PharmGKB.
This drug in other countries
The same active ingredient registered across other registries we cover - including different brands.