A member asked:

Can phenergan cause side effects of confusion, memory issues & lack of concentration? if so, will they subside after time? dose 25mg daily for 2 month

A doctor has provided 1 answer
Dr. Richard Zimon answered

Specializes in Internal Medicine

Phenergan: is a strong atni-histamine of the :old fashioned" variety producing SLEEPINESS as a major effect not just a "side" effect and like ANY SLEEPING MED it can cause confusion and memory issues.... these effects should subside even after chronic use and if the effects persist a complete NEUROLOGIC evaluation is a must! Hope this helps Dr Z

Answered 12/27/2019

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