Isopto B12

Cyanocobalamin, the active ingredient in Isopto B12, is a Vitamin B12 presented as an ocular solution for eye use. It supports ocular surface health and may be used in patients with vitamin B12‑related eye conditions.

GNH USA supplies Isopto B12 as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Isopto B12 is a vitamin B12 ocular preparation used to address conditions affecting the ocular surface. - Dry eye syndrome: helps alleviate discomfort and improve tear film stability. - Neurotrophic keratitis: supports corneal healing in patients with reduced corneal sensitivity. - Post‑surgical ocular surface recovery: may aid regeneration after refractive or cataract surgery.

Isopto B12 may cause local ocular reactions.

Common Side Effects: - Stinging or burning sensation upon instillation. - Transient redness of the conjunctiva. - Mild eye irritation or foreign‑body feeling. - Temporary blurred vision that clears quickly. - Mild tearing. - Slight itching.

Serious or Rare Side Effects: - Allergic reaction presenting as swelling, rash, or severe itching. - Persistent corneal epithelial defect. - Vision loss not attributable to underlying disease. - Severe ocular inflammation. - Anaphylaxis (extremely rare).

Before using Isopto B12, consider the following precautions. - Allergy assessment: avoid if known hypersensitivity to cyanocobalamin or formulation excipients. - Contact lens wearers: remove lenses before instillation and wait before reinserting. - Concomitant ocular medications: monitor for reduced efficacy or irritation. - Pregnancy and lactation: consult a healthcare professional before use. - Pediatric use: safety not established; use only if prescribed. - Store at room temperature below 25°C: keep in original container, protect from moisture and direct sunlight.

Isopto B12 may interact with other agents.

Major Interactions (Avoid): - Systemic metformin therapy: may reduce overall vitamin B12 levels, potentially diminishing ocular benefit. - High‑dose oral cyanocobalamin: concurrent use may lead to excess systemic B12.

Moderate Interactions (Monitor Closely): - Topical antibiotics: monitor for reduced antimicrobial activity. - Anti‑inflammatory eye drops: assess for additive irritation. - Preservative‑containing drops: watch for cumulative preservative load. - Other ocular vitamins: evaluate combined effect on ocular surface. - Systemic proton‑pump inhibitors: may affect B12 absorption, though ocular impact is minimal.