Ketotifen Unit Dose Stulln (Ketotifen)

Ketotifen is used to manage allergic eye conditions by stabilizing mast cells and blocking histamine receptors.

• Allergic conjunctivitis: reduces itching, redness and swelling of the conjunctiva.
• Seasonal allergic eye disease: alleviates symptoms triggered by pollen or other seasonal allergens.
• Ocular itching and redness due to allergy: provides rapid relief of discomfort and visual irritation.
• Contact lens‑related allergic irritation: helps control inflammation in users with hypersensitivity.

• Ketotifen acts as a competitive antagonist at histamine H1 receptors on ocular tissues, preventing histamine‑mediated vasodilation and nerve stimulation. Concurrently, it stabilizes mast cells, inhibiting degranulation and the release of inflammatory mediators such as prostaglandins and leukotrienes, thereby reducing ocular inflammation and allergic symptoms. The combined antihistaminic and mast‑cell stabilizing actions provide both immediate relief and prolonged control of ocular allergy.

Ketotifen may cause ocular and systemic adverse reactions, most of which are mild and reversible.

Common Side Effects

• Eye irritation: mild burning or stinging upon instillation.
• Blurred vision: temporary decrease in visual clarity.
• Redness: mild conjunctival hyperemia.
• Headache: occasional mild headache.

Serious or Rare Side Effects

• Severe allergic reaction: signs of angioedema or anaphylaxis.
• Persistent ocular pain: may indicate corneal involvement.
• Vision loss: rare but requires immediate medical attention.

When using Ketotifen Unit Dose Stulln, consider the following precautions to ensure safe and effective therapy.

• Avoid use in patients with known hypersensitivity to ketotifen or other antihistamines: discontinue if reaction occurs.
• Caution in individuals with narrow-angle glaucoma: monitor intra‑ocular pressure.
• Use with care in patients taking other ocular antihistamines or mast‑cell stabilizers: assess additive effects.
• Pregnant or breastfeeding women: consult healthcare professional as safety data are limited.
• Contact lens wearers: remove lenses before instillation and wait before reinserting.
• Store at room temperature: keep in original container, protect from moisture and direct sunlight.

Ketotifen can interact with certain medications and substances; awareness of these interactions helps prevent reduced efficacy or increased adverse effects.

Major Interactions (Avoid)

• Systemic antihistamines: concurrent use may increase risk of sedation and ocular irritation.
• MAO inhibitors: may potentiate antihistaminic effects leading to excessive anticholinergic activity.

Moderate Interactions (Monitor Closely)

• Other ocular decongestants or anti‑inflammatory drops: may cause additive irritation.
• Beta‑blocker eye drops: monitor intra‑ocular pressure changes.
• CYP450 substrates: ketotifen may inhibit metabolism of drugs processed by CYP3A4, requiring dose adjustment.