Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) is an injection that contains three important B‑vitamins: Vitamin B12 (Methylcobalamin), Vitamin B3 (Niacinamide), and Vitamin B6 (Pyridoxine). These vitamins are essential for keeping your nerves healthy, making red blood cells, and helping your body turn food into energy. Doctors use Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) when people have serious vitamin deficiencies that cannot be corrected with tablets or diet alone, such as in malabsorption problems or acute deficiencies. It is commonly prescribed to treat neuropathic pain (nerve pain), peripheral neuropathy (nerve damage), and certain types of anaemia.

Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) is an injectable formulation that contains three essential B‑complex vitamins: Methylcobalamin (Vitamin B12), Niacin (Vitamin B3), and Pyridoxine (Vitamin B6). This formulation is designed to support neurological health, correct vitamin deficiencies, and enhance metabolic functions.

Methylcobalamin (Vitamin B12) is the biologically active form of Vitamin B12. It is critical for the production of red blood cells, the synthesis of DNA, and the maintenance of normal nerve function. Deficiency of Vitamin B12 can result in megaloblastic anaemia, fatigue, and neuropathic symptoms such as tingling or numbness.

Niacin (Vitamin B3) plays a significant role in energy production. It is required for the formation of coenzymes (NAD and NADP) that drive cellular respiration and metabolic processes. Adequate niacin levels help maintain healthy skin, circulation, and overall energy balance.

Pyridoxine (Vitamin B6) is essential for amino acid metabolism, neurotransmitter synthesis, and haemoglobin production. It also helps regulate homocysteine levels, which is important for cardiovascular health. Deficiency of Vitamin B6 can cause irritability, confusion, and anaemia.

Injectable administration enables faster absorption of vitamins into the bloodstream. It is especially beneficial for patients who are unable to absorb vitamins effectively through the gastrointestinal tract, such as those with malabsorption syndromes, or in situations where immediate correction of deficiency is required.

Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) is indicated for the treatment and management of conditions related to B‑vitamin deficiency and disorders of the nervous system.

• Treatment of Vitamin B12 deficiency anaemia (megaloblastic anaemia)
• Correction of Vitamin B6 deficiency
• Support for nerve regeneration and repair
• Relief of nerve pain, tingling, and numbness
• Enhancement of energy metabolism and reduction of fatigue
• Regulation of homocysteine levels to support cardiovascular health
• Supplementation in patients with poor absorption of vitamins from food or oral supplements
• Supportive therapy in chronic illness, malnutrition, or recovery states

Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) offers significant therapeutic benefits, primarily due to its combination and high potency:

Supports healthy nerve function:

Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) contains neurotropic B‑vitamins that help repair and regenerate nerve cells, reducing symptoms such as tingling, numbness, and nerve pain.

Corrects vitamin deficiencies:

It replenishes essential vitamins (B12, B3, B6) that are often deficient in patients with anaemia, malnutrition, or chronic illness, thereby improving overall health.

Improves red blood cell production:

Methylcobalamin (Vitamin B12) and Pyridoxine (Vitamin B6) play a key role in haemoglobin synthesis and red blood cell formation, helping to treat megaloblastic anaemia and reduce fatigue.

Enhances energy metabolism:

Niacin (Vitamin B3) supports cellular energy production, which helps reduce weakness and improve vitality in patients with metabolic disorders or chronic fatigue.

Regulates homocysteine levels:

Pyridoxine helps lower elevated homocysteine, a risk factor for cardiovascular disease, thereby supporting heart health.

Provides rapid therapeutic effect:

As an injectable preparation, Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) ensures quick absorption and is especially useful for patients who cannot absorb vitamins adequately from food or oral supplements.

Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) is generally well-tolerated when administered as directed. Most adverse effects are mild and short‑lived, either related to the injection process itself or to the body’s response to high concentrations of water‑soluble B‑vitamins.

Common side effects (usually temporary and resolve on their own)

• Pain, redness, or swelling at the injection site
• Mild gastrointestinal discomfort, such as nausea or upset stomach
• Headache or dizziness

Less common side effects (require medical attention if persistent or severe)

• Allergic reactions, including rash, itching, or swelling
• Flushing or a sensation of warmth due to niacin content
• Rarely, changes in liver function or neuropathy with prolonged high‑dose use

Important note: Serious adverse reactions are typically rare. Patients should promptly inform their doctor if they experience persistent or severe symptoms. Administration should always be performed by a qualified doctor or nurse to minimise risks.

Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) is administered exclusively by a qualified healthcare professional such as a doctor or nurse. Patients should not attempt to use this medicine on their own. The dosage, frequency, and duration of treatment are determined by the prescribing physician based on the patient’s age, medical condition, and severity of deficiency or illness.

Route of Administration

• Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) is typically given by intramuscular injection, most often into the gluteal or deltoid muscle.
• The injection is prepared and delivered by the healthcare provider using sterile technique.

Dosage and Frequency

• The exact dose is individualised by the doctor.
• Injections may be scheduled daily, weekly, or at longer intervals depending on the therapeutic indication and patient response.

Preparation and Monitoring

• The healthcare professional will inspect the solution before use; it should not be administered if discoloured or if particles are present.
• Patients are monitored during therapy for clinical improvement and any adverse effects.

Important Notes

• Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) must not be self-administered.
• Always follow the treatment plan provided by your healthcare provider.
• Report any unusual side effects, such as pain, swelling at the injection site, dizziness, or allergic reactions immediately to your doctor.

Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) works by providing high concentrations of three critical B-vitamins that act as co-enzymes in key metabolic and neurological pathways:

1. Methylcobalamin (B12): Acts as a cofactor for methionine synthase, which is necessary for the synthesis of methionine, a precursor to S-adenosylmethionine (SAMe). SAMe is crucial for DNA regulation and the maintenance of the myelin sheath surrounding nerve fibres. It supports nerve repair and transmission.
2. Pyridoxine (B6): Converted to Pyridoxal Phosphate (PLP), which is a co-enzyme for over 100 enzymes, including those involved in the synthesis of neurotransmitters (like serotonin, dopamine, and GABA) and the metabolism of amino acids, ensuring proper brain and nerve function.
3. Nicotinamide (B3): Converted into Nicotinamide Adenine Dinucleotide (NAD+). These are essential cofactors in oxidation-reduction reactions, central to cellular energy (ATP) production and the processes of DNA repair.

• Not for Self-Injection: This is a prescription injectable medicine and must be given by a medical professional.
• Monitor Symptoms: Keep track of your neuropathic symptoms (numbness, pain, tingling). If they worsen or new symptoms appear (especially extreme numbness), report this to your doctor immediately (as high B6 can occasionally cause toxicity).
• Patience: While B12 absorption is immediate, nerve repair and regeneration take time. Consistent treatment over several weeks or months is usually required to see maximal improvement in neuropathy.
• Alcohol Restriction: Alcohol intake should be minimised, as it exacerbates B vitamin deficiencies and nerve damage.

• Store the ampoules in a cool, dark place, protected from light, usually below 25 °C (77 °F), unless otherwise instructed on the packaging.
• Do not freeze.
• Keep the injection ampoules out of the reach of children.
• Do not use the injection if it appears cloudy, discoloured, or contains particles.

No significant drug-food interactions are known. The injection bypasses the digestive system, meaning food intake does not affect its absorption or efficacy.

• Chloramphenicol: May decrease the therapeutic effect of Vitamin B12, particularly on blood cell formation.
• Anticonvulsants (e.g., Phenobarbital, Phenytoin): May increase the metabolism and requirement of Pyridoxine (B6).
• Levodopa (L-DOPA): Pyridoxine (B6) may reverse the therapeutic effect of Levodopa (used for Parkinson’s disease). This interaction primarily relates to the older, pure L-DOPA formulations.
• Isoniazid (INH), Hydralazine, Penicillamine: These drugs are Pyridoxine antagonists and increase the need for B6, often necessitating co-administration of B6 to prevent neuropathy (the treatment is therefore beneficial).

• Leber's Disease (Hereditary Optic Neuropathy): Methylcobalamin is contraindicated in patients with Leber's disease or certain other types of hereditary optic nerve atrophy, as it may cause severe, rapid deterioration of vision.
• Polycythemia Vera: Treatment with Vitamin B12 may mask the symptoms of this blood disorder.
• Severe Renal or Hepatic Impairment: Requires caution and potential dose adjustment (see Safety Advice).

The dosage is highly variable and determined solely by the treating physician based on diagnosis (e.g., severity of deficiency, presence of neuropathy). The typical regimen involves an initial loading phase (e.g., daily or weekly injections) followed by a maintenance phase (e.g., monthly).

Cases of acute overdose are rare. The B vitamins in this preparation are water‑soluble, and any excess amounts are usually excreted through the kidneys.

• Risk of B6 Toxicity: Prolonged high-dose administration of Pyridoxine (B6), even at the high levels present in this combination, can eventually lead to sensory neuropathy (severe numbness and difficulty walking).
• Action Required: If you suspect an overdose or experience severe nerve symptoms (such as extreme numbness or loss of coordination), seek medical attention immediately.

If a scheduled injection of Vitamin B12 (methylcobalamin) + Vitamin B3 (niacin) + Vitamin B6 (pyridoxine) is missed, it is important to contact your doctor or nurse as soon as possible to arrange a new appointment. Do not wait until the next planned visit, since maintaining regular dosing is essential for correcting vitamin deficiencies and for effective management of neuropathy.