Nervin(100 mg+50 mg+100 mg)/2 ml

Established / Widely Accepted Uses

• Prevention and treatment of dietary deficiency of thiamine (Vitamin B1), riboflavin (Vitamin B2), and pyridoxine (Vitamin B6), such as in inadequate diet, malabsorption, chronic alcohol use, or increased metabolic demand.
• General nutritional supplementation to maintain normal energy (carbohydrate, fat, and protein) metabolism and nervous system function.

Guideline-Supported / Adjunct Uses

• Adjunctive supportive therapy in peripheral neuritis/neuropathy (e.g. diabetic neuropathy, alcohol-related neuropathy) alongside disease-specific treatment; Nervin is not a substitute for treating the underlying cause.
• Supplementation during conditions of increased B-vitamin requirement, such as pregnancy, lactation, prolonged illness, or convalescence, under medical advice.

Uses Requiring Combination Therapy

• Isoniazid-associated peripheral neuropathy prevention: pyridoxine (a component of Nervin) is co-administered with isoniazid during tuberculosis treatment specifically to prevent isoniazid-induced B6 deficiency.

Nervin is intended for mild-to-moderate deficiency states and general supplementation; severe, diagnosed single-vitamin deficiencies (e.g. beriberi, Wernicke's encephalopathy) usually require higher-dose, physician-directed, sometimes parenteral, therapy rather than this combination product.

Each tablet/capsule of Vitamin B1, B2 and B6 generally contains Thiamine (Vitamin B1), Riboflavin (Vitamin B2), and Pyridoxine hydrochloride (Vitamin B6) as active ingredients, in strengths that vary by brand and formulation (tablet, capsule, or injectable preparation). Refer to the specific product label for the exact quantity of each vitamin.

Nervin is a fixed-dose combination nutritional supplement containing three water-soluble B-group vitamins:thiamine (B1), riboflavin (B2), and pyridoxine (B6). These vitamins act as essential coenzymes in carbohydrate,fat, and amino acid metabolism and support normal function of the nervous system, skin, and mucous membranes.

Nervin is commonly used to prevent or correct mild deficiency of these vitamins and as a supportive supplementin conditions of increased nutritional demand or peripheral nerve disorders.

Vitamin B-Complex / Multivitamin Nutritional Supplement — Nervin combination

Vitamin B1, B2 and B6 supplies three interrelated B-group vitamins, each functioning as a precursor to essential coenzymes:

• Thiamine (B1) is converted to thiamine pyrophosphate, a coenzyme required for carbohydrate metabolism (pyruvate and alpha-ketoglutarate dehydrogenase complexes) and normal nerve conduction.
• Riboflavin (B2) is converted to flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD), coenzymes central to cellular oxidation-reduction reactions and energy production.
• Pyridoxine (B6) is converted to pyridoxal-5-phosphate, a coenzyme required for amino acid metabolism, neurotransmitter synthesis (e.g. GABA, serotonin), and hemoglobin synthesis.

Together, the components of Vitamin B1, B2 and B6 support normal energy metabolism, red blood cell formation, and peripheral nervous system function.

Nervin is usually taken orally, preferably after meals to reduce the chance of mild stomach upset. Tablets/capsules should be swallowed whole with a glass of water and not crushed or chewed unless the product is specifically designed to be chewed. If an injectable form of Nervin is prescribed, it must be administered only by a qualified healthcare professional.

• Levodopa (without carbidopa): The pyridoxine (B6) component of Nervin can reduce the effectiveness of levodopa when levodopa is used alone, by increasing its peripheral breakdown. This interaction is not clinically significant with combination carbidopa-levodopa products.
• Isoniazid, hydralazine, penicillamine, cycloserine: These drugs increase the body's requirement for, or deplete, pyridoxine; conversely, they do not reduce the benefit of taking Nervin, and B6 supplementation (as in Nervin) is often specifically recommended alongside them to prevent drug-induced B6 deficiency and neuropathy.
• Phenytoin and phenobarbital: Chronic use of high-dose pyridoxine (a component of Nervin) has been reported to modestly lower serum levels of these anticonvulsants in some patients; monitoring is advised with prolonged concurrent high-dose use.

Nervin is generally well tolerated at standard supplemental doses. Reported side effects include:

• Mild gastrointestinal upset (nausea, stomach discomfort) — usually reduced by taking Nervin with food.
• Harmless bright-yellow discoloration of urine due to the riboflavin component.
• Uncommon hypersensitivity reactions (skin rash, itching), particularly with the thiamine component in injectable forms; rare anaphylactoid reactions have been reported with parenteral thiamine.
• Peripheral sensory neuropathy (numbness, tingling, unsteady gait) with prolonged high-dose use of the pyridoxine component — see Precautions and Warnings and Overdose Effects.

Thiamine, riboflavin, and pyridoxine are essential nutrients and, at doses within the recommended dietaryallowance, Nervin is generally considered acceptable for use during pregnancy and lactation. However, dosesabove the recommended allowance should be used only if clearly needed and only under medical advice, asthe safety of high-dose supplementation has not been fully established. A physician or obstetrician shouldbe consulted before use of Nervin during pregnancy or breastfeeding, especially at doses higher than standardsupplemental strength.

• Avoid exceeding the recommended dose of Nervin, particularly with respect to the pyridoxine (B6) component; prolonged intake of high-dose B6 has been associated with dose- and duration-dependent peripheral sensory neuropathy, which may be irreversible in severe cases.
• Use with caution in patients with a history of hypersensitivity reactions to B-vitamins, especially before administering an injectable form of Nervin.
• Nervin is intended for mild deficiency and general nutritional support; it is not a substitute for physician-directed treatment of severe, diagnosed vitamin deficiency states.
• Patients on hemodialysis or with malabsorption syndromes may have altered B-vitamin needs and should use Nervin under medical guidance.

Thiamine and riboflavin are water-soluble and excess amounts are generally excreted in the urine, makingacute toxicity from Nervin uncommon at typical overdose amounts. However, chronic excessive intake of thepyridoxine (B6) component can cause a sensory peripheral neuropathy (numbness, tingling, difficulty walking),which may take months to resolve after stopping the supplement. If overdose of Nervin is suspected, especiallywith large or repeated excess doses, seek immediate medical attention or contact a poison control center;do not attempt specific home treatment.

Store at room temperature (below 30°C), away from light and moisture. Keep out of reach of children.

• Elderly: Nervin may be used at standard doses; elderly patients with reduced dietary intake or malabsorption may benefit from supplementation, under medical guidance.
• Renal impairment: Patients with significant renal impairment, particularly those on dialysis, may lose water-soluble B-vitamins during dialysis and may require Nervin supplementation as advised by a physician; avoid unsupervised high-dose use.
• Hepatic impairment: No specific dose adjustment is well established for standard doses of Nervin in hepatic impairment; use as directed by a physician.
• Chronic alcohol use: Patients with alcohol use disorder are at higher risk of thiamine and other B-vitamin deficiency and may be specifically directed to use Nervin or higher-dose alternatives under medical supervision.

Duration of Nervin use depends on the indication: short courses are typically used to correct mild, diet-related deficiency, while longer-term use may be appropriate for ongoing nutritional support or as an adjunct in chronic peripheral neuropathy, under physician direction. Indefinite use of high-dose formulations without medical supervision is not recommended, given the risk of B6-related peripheral neuropathy with prolonged excessive intake.

Water-soluble B-group vitamins; Vitamin B-complex nutritional supplement.

The components of Vitamin B1, B2 and B6 act as precursors to coenzymes essential for cellular energy metabolism andnervous system function: thiamine forms thiamine pyrophosphate (carbohydrate metabolism), riboflavin formsFAD/FMN (oxidation-reduction reactions), and pyridoxine forms pyridoxal-5-phosphate (amino acid metabolismand neurotransmitter synthesis). By replenishing these coenzyme precursors, Vitamin B1, B2 and B6 supports normal metabolicand neurological function in individuals with inadequate intake or increased requirement.

Nervin may be used in children to prevent or treat dietary B-vitamin deficiency, using age-appropriate,lower-strength formulations and weight-based dosing where available. Safety and efficacy of specifichigher-strength adult formulations of Nervin have not been established in infants and young children, andsuch products should not be given to children except under direct medical supervision.