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A member asked:

How bad is it to take nyquil regularly?

A doctor has provided 1 answer
Dr. Heidi Fowler answered

Specializes in Psychiatry

Not long term: Nyquil contains doxylamine (antihistamine) that can be used short term as a sedative. If you take it chronically, you could develop rebound insomnia.

Answered 2/6/2021

5.3k views

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