In GPC management, which allergy drop is used once daily?

• A. Olopatadine 0.2% qd
• B. Loratadine oral
• C. Ketotifen 0.025% bid
• D. Azelastine 0.05% bid

Answer: (A)

Managing giant papillary conjunctivitis hinges on using a topical allergy medication that both relieves itching and stabilizes the mast cells driving the reaction. Olopatadine 0.2% given once daily fits this need by delivering antihistamine effect with mast cell stabilization in a convenient dosing schedule. The other options don’t meet the “once daily” criterion: loratadine is an oral antihistamine, not a drop, so it isn’t used as the topical drop for GPC; ketotifen 0.025% is typically used twice daily; azelastine 0.05% is also used twice daily. Therefore, the once-daily option is the best choice for a single daily drop in GPC management.