Gnv Injection is a parenteral formulation combining Methylcobalamin (1500 mcg), Vitamin B6 (Pyridoxine) (100 mg), and Niacinamide (100 mg), designed to address deficiencies and support neurological and metabolic functions. Methylcobalamin, an active form of Vitamin B12, plays a critical role in DNA synthesis, nerve regeneration, and hematopoiesis, making it essential for treating peripheral neuropathies, megaloblastic anemia, and certain neurodegenerative conditions. Vitamin B6 (Pyridoxine) is vital for amino acid metabolism, neurotransmitter synthesis, and immune function, often used to manage conditions such as pyridoxine deficiency, peripheral neuropathy, and certain metabolic disorders. Niacinamide, a form of Vitamin B3, contributes to cellular energy production and DNA repair, and is beneficial in preventing pellagra and supporting skin health. The combined administration of these vitamins via injection ensures rapid bioavailability, making Gnv Injection suitable for patients with malabsorption issues, severe deficiencies, or those requiring prompt therapeutic intervention. It is indicated in the treatment of neuropathies, vitamin B complex deficiencies, and related metabolic disorders. Administration should be under medical supervision, considering contraindications such as hypersensitivity to any component and monitoring for potential adverse effects including allergic reactions or neurotoxicity. Gnv Injection offers a comprehensive approach to vitamin B complex supplementation in clinical practice.