A member asked:

So what are side effects of promethazine hydrochloride pills?

A doctor has provided 1 answer

Multiple effects: Promethazine is a potent antihistamine that can cause dizziness, drowsiness, dry mouth, nausea, vomiting, weakness and occasionally more serious central nervous system side effects. It is usually well tolerated in most people.

Answered 6/30/2014

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