2 doctors weighed in:

I have been taking melatonin for 2 weeks now and the past week I have been constipated ? Also been having acid reflex

2 doctors weighed in
Dr. Stuart Hickerson
Family Medicine
1 doctor agrees

In brief: Constipation

Abdominal cramps have been associated with Melatonin, but I am not aware of melatonin causing constipation.

In brief: Constipation

Abdominal cramps have been associated with Melatonin, but I am not aware of melatonin causing constipation.
Thank
1 comment
Dr. Heidi Fowler
Nausea has been reported. I just reviewed several different sources and could not find any reports of constipation. REF: https://www.drugs.com/npp/melatonin.html
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