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epinastine hydrochlorideA highly-selective antihistamine drug effective topically in relieving the symptoms of conjunctival allergy arising from contact with grass and tree pollen grains, animal dander and other contact allergens. A brand name is Relestat.
Any substance that reduces the effect of histamine or blocks histamine receptors, usually the histamine 1 (H1) receptor. It is used in the treatment of allergic conjunctivitis and also in the temporary relief of minor allergic symptoms of the eye. Common agents include antazoline sulfate, azelastine hydrochloride, cetirizine, chlorphenamine, emedastine, epinastine hydrochloride, ketotifen, levocabastine, loratadine and olopatadine. See hypersensitivity; mast cell stabilizers.