Europe — EMA
Ketazed (Ketotifen Hydrogen Fumarate)
GNH USA supplies Ketazed (Ketotifen Hydrogen Fumarate), a H1 antihistamine ophthalmic agent for allergic conjunctivitis and ocular itching.
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What is Ketotifen Hydrogen Fumarate?
Ketotifen hydrogen fumarate, the active ingredient in Ketazed, is a H1 receptor antagonist presented as an ophthalmic preparation for ocular use. It is employed to relieve symptoms of allergic conjunctivitis, ocular itching and redness caused by allergic eye disease.
GNH USA supplies Ketazed as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.
What is Ketotifen Hydrogen Fumarate used for?
Ketazed is an ophthalmic antihistamine used to manage allergic eye conditions. It works by stabilising mast cells and blocking H1 receptors in the conjunctiva.
Allergic conjunctivitis: reduces eye redness, swelling and itching caused by allergens. Ocular itching: provides rapid relief from itch sensations in the eye. Redness due to allergic eye disease: diminishes hyperemia and discomfort associated with allergic inflammation.
What are the side effects of Ketotifen Hydrogen Fumarate?
Ketazed may cause local ocular reactions, most of which are mild and transient.
Common Side Effects: - Burning or stinging sensation upon instillation. - Temporary blurred vision. - Mild eye irritation or foreign‑body feeling. - Conjunctival hyperemia (redness).
Serious or Rare Side Effects: - Allergic reaction with swelling of the eyelids or periorbital area. - Severe eye pain or photophobia. - Corneal ulceration or keratitis. - Sudden loss of vision. - Persistent inflammation requiring medical attention.
What precautions apply to Ketotifen Hydrogen Fumarate?
When using Ketazed, consider the following safety measures.
Avoid use with contact lenses: remove lenses before and after application. Discontinue if severe irritation occurs: seek ophthalmic evaluation. Limit duration of use: consult a clinician if symptoms persist beyond one week. Keep out of reach of children: accidental ingestion may cause systemic effects. Store at room temperature below 25°C: keep in the original container, protect from moisture and direct sunlight.
What does Ketotifen Hydrogen Fumarate interact with?
Ketazed may interact with other ophthalmic or systemic agents.
Major Interactions (Avoid): - Concurrent use of other topical antihistamine eye drops: may increase local irritation. - Combination with ocular vasoconstrictors (e.g., naphazoline): risk of excessive vasoconstriction.
Moderate Interactions (Monitor Closely): - Systemic antihistamines (e.g., cetirizine): additive sedative effect is unlikely but monitor for increased dryness. - Topical non‑steroidal anti‑inflammatory eye drops: may enhance ocular discomfort. - Preservative‑containing eye solutions: monitor for cumulative preservative toxicity.



