Neiratax (Thiamine Hydrochloride, Cyanocobalamin, Pyridoxine Hydrochloride, Lidocaine Hydrochloride)

Neiratax combines vitamin B complex components and a local anesthetic, addressing nutritional deficiencies and procedural pain management.

• Vitamin B1 deficiency: restores thiamine levels and supports carbohydrate metabolism.
• Vitamin B12 deficiency: promotes red blood cell formation and neurological function.
• Vitamin B6 deficiency: aids amino‑acid metabolism and neurotransmitter synthesis.
• Peri‑procedural analgesia: provides rapid local anesthesia for minor surgical or diagnostic interventions.
• Post‑operative pain control: reduces discomfort after minor surgeries when used as an adjunct.

• Thiamine acts as a co‑factor for enzymes in carbohydrate metabolism, cyanocobalamin participates in DNA synthesis and neurologic function, and pyridoxine supports amino‑acid conversion and neurotransmitter production. Lidocaine blocks voltage‑gated sodium channels in neuronal membranes, preventing depolarisation and producing local anaesthesia. Together, the vitamins replenish deficient cofactors while lidocaine provides immediate analgesia at the injection site.

Neiratax may cause a range of adverse reactions following intramuscular administration.

Common Side Effects

• Injection site pain or erythema.
• Mild nausea or dizziness.
• Transient headache.
• Tingling or paraesthesia near the injection site.
• Temporary mild hypotension.
• Mild pruritus.

Serious or Rare Side Effects

• Anaphylactic or severe allergic reaction.
• Cardiac arrhythmia or profound bradycardia.
• Severe hypotension requiring intervention.
• Seizures related to lidocaine toxicity.
• Stevens‑Johnson syndrome or toxic epidermal necrolysis.
• Persistent neurologic deficits from vitamin excess.

Prior to using Neiratax, clinicians should evaluate patient history and monitor for potential adverse events.

• Assess vitamin deficiency status: confirm need for B‑vitamin supplementation.
• Screen for lidocaine hypersensitivity: avoid in patients with known allergy.
• Use caution in cardiac disease: monitor heart rate and rhythm.
• Adjust in renal or hepatic impairment: consider reduced clearance.
• Store at ambient temperature: keep in original packaging, protect from moisture and light.

Neiratax may interact with other medications, requiring careful assessment.

Major Interactions (Avoid)

• MAO inhibitors with lidocaine: increased risk of severe hypotension.
• Beta‑blockers combined with lidocaine: may precipitate bradyarrhythmias.
• Class I anti‑arrhythmic drugs: additive cardiac conduction effects.

Moderate Interactions (Monitor Closely)

• Alcohol: can enhance central nervous system depression.
• Concurrent local anesthetics: risk of cumulative lidocaine toxicity.
• High‑dose vitamin B supplements: may interfere with laboratory assays.
• Diuretics: may alter electrolyte balance affecting lidocaine action.