LIT CONTROL PH BALANCE CAPSULES

Indications

• Phosphate deficiency
• Magnesium deficiency
• Dietary supplementation

Dosage

Children: Refer to the BNF for Children for specific dosing recommendations.

Adults: Refer to the BNF for specific dosing recommendations.

Mechanism of action

Phytin acts by binding to minerals in the gastrointestinal tract, which can enhance the bioavailability of phosphate and magnesium while reducing the absorption of certain divalent and trivalent cations. This mechanism helps to regulate mineral balance in the body.

Pharmacodynamics

Phytin is known to influence mineral metabolism, particularly the absorption and utilization of calcium and magnesium. It acts as an antinutrient by chelating minerals, which can affect their bioavailability. However, it also provides an important source of phosphorus, which is critical for various physiological functions including energy metabolism and bone health.

Pharmacokinetics

The pharmacokinetics of phytin are not extensively documented; however, it is generally believed to be poorly absorbed in the gastrointestinal tract due to its chelating properties. The absorption of phytin and its effects on mineral metabolism can vary based on dietary factors and individual physiological conditions. After ingestion, its effects on mineral levels may be observed over a period of time, as it interacts with dietary components.

Pregnancy

There is limited data on the use of phytin during pregnancy. Consult healthcare professionals for guidance on safety and potential risks.

Breast-feeding

Consult with a healthcare provider before using phytin while breastfeeding, as safety data is limited.

Storage

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

Indications

• Cardiovascular disease prevention
• Cancer prevention
• Neurodegenerative disease prevention
• Anti-inflammatory treatments
• Metabolic syndrome management
• Gut health improvement

Mechanism of action

Polyphenols exert their effects primarily through their antioxidant activity, scavenging free radicals and reducing oxidative stress. They also modulate cell signaling pathways and gene expression related to inflammation and cell survival. Specific mechanisms include the inhibition of cyclooxygenase (COX) enzymes, modulation of nuclear factor-kappa B (NF-kB), and activation of the Nrf2 pathway, which enhances the expression of antioxidant enzymes. Furthermore, polyphenols can influence gut microbiota composition, leading to improved gut health and systemic benefits.

Pharmacodynamics

Polyphenols exhibit a wide range of biological effects, including anti-inflammatory, anticarcinogenic, and cardioprotective properties. Their ability to modulate metabolic processes helps in improving insulin sensitivity and reducing the risk of obesity-related complications. They also influence vascular health by promoting endothelial function and reducing blood pressure. The pharmacodynamic effects of polyphenols can vary depending on their structure, concentration, and the presence of other dietary components.

Pharmacokinetics

Polyphenols are generally poorly absorbed in the gastrointestinal tract, with their bioavailability varying significantly based on the type of polyphenol and the food matrix. After ingestion, they undergo extensive metabolism in the liver and the gut, leading to the formation of various metabolites. These metabolites can be further absorbed and distributed throughout the body. The elimination half-life of polyphenols is relatively short, typically ranging from a few hours to a day, depending on the specific compound. Their pharmacokinetic profiles highlight the importance of regular consumption for achieving potential health benefits.

Adverse effects

• Gastrointestinal disturbances
• Hypersensitivity reactions
• Potential interference with iron absorption

Interactions

• May interact with anticoagulant medications, increasing the risk of bleeding
• Can affect the bioavailability of certain drugs by altering gut flora or binding to drugs in the intestine

Precautions

• Use with caution in individuals with known allergies to specific polyphenol sources
• Monitor patients on anticoagulants for potential enhanced effects

Pregnancy

Safety during pregnancy has not been established; consult a healthcare provider before use.

Breast-feeding

Limited data on safety during breastfeeding; consult a healthcare provider.

Storage

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

Formulations

• Capsules
• Tablets
• Powdered extracts
• Liquid extracts

Indications

• Vitamin A deficiency
• Night blindness
• Impaired wound healing
• Epithelial disorders

Dosage

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

Adults: Refer to BNF for specific adult dosing information.

Mechanism of action

Retinol is converted in the retina to 11-cis-retinal, which is crucial for the conversion of light into neural signals necessary for vision. It binds to opsin in rhodopsin, facilitating the isomerization to all-trans-retinal upon exposure to light, thus triggering visual signaling. Additionally, retinol interacts with retinoic acid receptors (RARs) and retinoid-X receptors (RXRs) as transcription factors, modulating gene expression related to cellular differentiation and growth.

Pharmacodynamics

Vitamin A is effective in treating Vitamin A deficiency, which can lead to vision impairment and other health issues. It plays a critical role in various biological processes including vision, cellular differentiation, reproduction, and immune system function. Its deficiency can cause symptoms such as night blindness and impaired wound healing, while adequate levels support growth and development.

Pharmacokinetics

Retinol is absorbed from the gastrointestinal tract and stored in the liver, where it can be mobilized as needed. It undergoes metabolism primarily in the liver, where it is converted to retinal and retinoic acid, the active forms of Vitamin A. The elimination half-life varies, but retinol is generally excreted in urine and bile. The bioavailability can be affected by dietary fat intake.

Adverse effects

• Nausea
• Vomiting
• Headache
• Dizziness
• Fatigue
• Irritability
• Dry skin
• Peeling of skin
• Itching
• Blurred vision

Precautions

• Use with caution in patients with liver disease due to potential hepatotoxicity.
• Monitor for signs of vitamin A toxicity, especially in patients on high doses or prolonged therapy.
• Caution in patients with a history of alcohol abuse, as it may exacerbate liver conditions.

Pregnancy

Retinol should be used with caution during pregnancy due to the risk of teratogenic effects. High doses of vitamin A can lead to fetal malformations.

Breast-feeding

Retinol is generally considered safe during breastfeeding, but excessive intake should be avoided to prevent potential adverse effects on the infant.

Storage

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

Formulations

• Capsules
• Tablets
• Oral solutions
• Topical preparations

Mechanism of action

Vision:Vitamin A (all-<i>trans</i> retinol) is converted in the retina to the 11-<i>cis</i>-isomer of retinaldehyde or 11-<i>cis</i>-retinal. 11-<i>cis</i>-retinal functions in the retina in the transduction of light into the neural signals necessary for vision. 11-<i>cis</i>-retinal, while attached to opsin in rhodopsin is isomerized to all-<i>trans</i>-retinal by light. This is the event that triggers the nerve impulse to the brain which allows for the perception of light. All-<i>trans</i>-retinal is then released from opsin and reduced to all-<i>trans</i>-retinol. All-<i>trans</i>-retinol is isomerized to 11-<i>cis</i>-retinol in the dark, and then oxidized to 11-<i>cis</i>-retinal. 11-<i>cis</i>-retinal recombines with opsin to re-form rhodopsin. Night blindness or defective vision at low illumination results from a failure to re-synthesize 11-<i>cis</i> retinal rapidly. Epithelial differentiation: The role of Vitamin A in epithelial differentiation, as well as in other physiological processes, involves the binding of Vitamin A to two families of nuclear retinoid receptors (retinoic acid receptors, RARs; and retinoid-X receptors, RXRs). These receptors function as ligand-activated transcription factors that modulate gene transcription. When there is not enough Vitamin A to bind these receptors, natural cell differentiation and growth are interrupted. Topical vitamin A can reverse the impairment of wound healing seen in patients receiving corticosteroids, perhaps by restoring the normal inflammatory reaction in the wound. The possibility has been suggested that systemic vitamin A could inhibit the anti-inflammatory effect of systemic corticosteroids. Retinol arrested proliferation of cultured neuroblastoma cells at concentrations of 50 um. A correlation existed between inhibition of growth and inhibition of ornithine decarboxylase in both neuroblastoma cells and glioma cells with retinol. In rats exptl-hypervitaminosis A has been shown ... to produce severe damage of the retina, mainly in the pigment epithelium according to electron microscopy. Alcohol dehydrogenase activity was shown to disappear in the pigment epithelium and visual cells ... . /The authors/ have shown that in an experimental cell culture system consisting of carcinogen-treated 10T1/2 cells, both retinoids and all dietary carotenoids examined can reversibly inhibit neoplastic transformation in the post-initiation phase of carcinogenesis. This activity strongly correlates with their ability to increase gap junctional intercellular communication by up-regulating the expression of the gene CX43 (connexin43). Connexins comprise the structural unit of gap junctions, organelles which allow direct transfer of signals, nutrients and waste products between contacting cells. CX43 is the most widely expressed member of the gap junction family of genes, and we have demonstrated that its expression is strongly down-regulated in human cancers and in several premalignant conditions. When several human tumour cell lines were genetically engineered to conditionally express CX43 under the influence of a tetracycline promoter, their neoplastic phenotype was strongly attenuated. Specifically, induced cells were inhibited from growing in an anchorage-independent manner and, additionally, growth as xenografts in immunocompromised animals was also strongly attenuated. Growth inhibition in suspension was associated both with increased G(1) cell-cycle arrest and with increased apoptosis. /The authors/ propose a model whereby junctional communication allows the transfer of growth inhibitory signals from normal to neoplastic cells and that retinoids and carotenoids, by increasing signal transfer, act to prevent cancer.

Pharmacodynamics

Vitamin A is effective for the treatment of Vitamin A deficiency. Vitamin A refers to a group of fat-soluble substances that are structurally related to and possess the biological activity of the parent substance of the group called all-<i>trans</i> retinol or retinol. Vitamin A plays vital roles in vision, epithelial differentiation, growth, reproduction, pattern formation during embryogenesis, bone development, hematopoiesis and brain development. It is also important for the maintenance of the proper functioning of the immune system.