How effective is Diphenhydramine in treating allergic conjunctivitis symptoms, including redness, swelling, and itching, compared to eye drops or other oral antihistamines?
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How effective is Diphenhydramine in treating allergic conjunctivitis symptoms, including redness, swelling, and itching, compared to eye drops or other oral antihistamines?
Diphenhydramine can relieve allergic conjunctivitis symptoms but is less targeted than antihistamine eye drops, which act faster directly at the site of irritation.
Compared to other oral antihistamines like loratadine, diphenhydramine may cause more drowsiness and has shorter duration of action but is effective in reducing symptoms.