Meni-Drops (Ketotifen Hydrogen Fumarate)

Meni-Drops, containing ketotifen hydrogen fumarate, is used to manage ocular allergic conditions.

• Allergic conjunctivitis: reduces itching, redness and tearing associated with allergic eye inflammation.
• Ocular itching: provides rapid relief of itch sensation caused by histamine release in the eye.
• Redness due to allergic eye disease: diminishes vascular hyperemia and improves ocular comfort.

• Ketotifen hydrogen fumarate acts by stabilizing mast cells and competitively blocking H1 histamine receptors on ocular tissues. By preventing degranulation, it reduces the release of histamine, prostaglandins and other inflammatory mediators, thereby limiting vasodilation, vascular permeability and nerve stimulation that cause itching, redness and swelling in the conjunctiva. The combined antihistaminic and mast‑cell stabilizing actions provide sustained control of allergic eye symptoms throughout the dosing interval.

Eye‑drop administration of ketotifen may be associated with local ocular reactions and, rarely, systemic effects.

Common Side Effects

• Burning sensation: transient mild stinging upon instillation.
• Blurred vision: temporary visual disturbance that resolves quickly.
• Redness: mild conjunctival hyperemia unrelated to allergy.
• Tearing: increased lacrimation shortly after dosing.
• Foreign body sensation: feeling of grit or irritation in the eye.

Serious or Rare Side Effects

• Severe allergic reaction: signs of angioedema or anaphylaxis requiring immediate medical attention.
• Corneal ulceration: persistent epithelial defect or ulcer formation.
• Persistent ocular irritation: irritation lasting more than several days despite discontinuation.

When using Meni-Drops, certain precautions should be observed to ensure safety and maintain product efficacy.

• Avoid contact lens use: discontinue lenses at least 15 minutes before and after instillation.
• Monitor for hypersensitivity: discontinue if signs of rash, swelling or severe eye irritation develop.
• Use with caution in glaucoma: may increase intra‑ocular pressure in susceptible individuals.
• Do not use in active eye infection: infection may be aggravated by the formulation.
• Pregnant or nursing patients: consult a healthcare professional before use due to limited safety data.
• Store at ambient temperature: keep the bottle in the original packaging, protect from light and moisture.

Ketotifen hydrogen fumarate can interact with other ophthalmic or systemic agents, affecting its efficacy or safety.

Major Interactions (Avoid)

• Anticholinergic eye drops: may reduce tear production and exacerbate dryness when combined.
• Systemic antihistamines: concurrent use can increase risk of additive sedation or anticholinergic effects.

Moderate Interactions (Monitor Closely)

• Non‑steroidal anti‑inflammatory eye drops: may increase risk of ocular irritation.
• Topical corticosteroids: may mask signs of infection, requiring careful monitoring.
• Other mast‑cell stabilizers: combined use offers limited additional benefit and may increase local irritation.