Oftallen (Ketotifen Hydrogen Fumarate)

Ketotifen Hydrogen Fumarate, the active ingredient in Oftallen, is a mast cell stabilizer presented as a tablet for oral use. It is used to manage allergic eye conditions such as seasonal allergic conjunctivitis in adults and children. GNH USA supplies Oftallen as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

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

Ketotifen Hydrogen Fumarate is a mast‑cell stabilizer that acts on allergic pathways in the eye.

- Seasonal allergic conjunctivitis: reduces itching, redness and watery discharge. - Vernal keratoconjunctivitis: helps control chronic inflammation and photophobia. - Atopic keratoconjunctivitis: alleviates discomfort and prevents flare‑ups.

Side effects are generally mild and related to local ocular exposure.

Common Side Effects: - Transient stinging or burning sensation. - Temporary blurred vision. - Mild ocular irritation. - Slight headache. - Dry eye sensation.

Serious or Rare Side Effects: - Persistent eye irritation or inflammation. - Allergic contact dermatitis around the eye. - Vision changes not resolving within 24 hours. - Severe headache or neurological symptoms. - Systemic hypersensitivity reactions.

Patients should be aware of specific safety considerations when using Oftallen.

- Avoid contact with lenses: remove contact lenses before application and wait before reinserting. - Concomitant eye medications: inform the clinician of any other ocular drops being used. - Pregnancy and lactation: discuss with a healthcare professional before use. - Pediatric use: dosage and safety in children under 2 years have not been established. - Storage: Store at below 25°C: keep in the original packaging, protect from moisture and direct sunlight.

Oftallen may interact with other ophthalmic agents, requiring monitoring.

Major Interactions (Avoid): - Concurrent use with other mast‑cell stabilizers may increase local irritation.

Moderate Interactions (Monitor Closely): - Combination with non‑steroidal anti‑inflammatory eye drops can heighten risk of corneal toxicity. - Use with topical antihistamines may amplify sedative effects if systemic absorption occurs. - Interaction with systemic antihistamines may alter overall antihistaminic load. - Caution with preservative‑containing drops, as cumulative preservative exposure can irritate the ocular surface.