<unk>  is an antihistamine that is FDA approved for the prophylaxis of allergic conjunctivitis.   Common adverse reactions include eye irritation, burning and/or stinging upon instillation, eye redness and eye pruritus, nasopharyngitis, headache, eye discharge, eye swelling, erythema of eyelid, eyelid edema, hypersensitivity, and somnolence.
Alcaftadine
Azatadine
Loratadine
Tromantadine
Rimantadine
Visnadine
Desloratadine
Amantadine 