Patalon 0.1% Eye Drops contain Olopatadine Hydrochloride 0.1%, an antihistamine used to relieve ocular itching associated with allergic conjunctivitis. Manufactured by Ibn Sina Pharmaceuticals Ltd., this ophthalmic solution is available in a 5 ml sterile dropper bottle. The typical dosage is one drop in each affected eye twice daily, with intervals of 6 to 8 hours.