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A 40-year-old member asked:

So what are side effects of promethazine hydrochloride pills?

1 doctor answer2 doctors weighed in
Dr. Geoffrey Tyson
Pain Management 40 years experience
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.

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Last updated Jun 30, 2014

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