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A yellow pill with "AV" on one side and "4829" on the other is identified as Diphenhydramine Hydrochloride 25 mg, an over-the-counter antihistamine commonly used to relieve symptoms of allergy, hay fever, and the common cold. It can also be used as a sleep aid due to its sedative properties. Always consult with a healthcare professional before using any medication.

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1d ago

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