A patient has been using levocabastine ophthalmic drops, an antihistamine, for the treatment of allergic conjunctivitis. Which of the following is a common side effect of this medication?


• Antihistamine eye drops commonly cause a headache. Other side effects include burning, rhinitis sinusitis, blurred vision, and pruritus.

• These drops may sting, and the patient can be advised to keep them refrigerated to decrease discomfort with their application.

Incorrect options:

• Diplopia, tinnitus, and orange tears are not associated with the use of antihistamine eye drops.

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