Possible: The only way to really tell would be to stop taking it and see if you are still experiencing the morning symptoms. NyQuil can cause upset stomach. If symptoms persist would suggest keeping of symptoms and seeking medical attention.
Answered 1/5/2019
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3 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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