A member asked:

Melatonin caused me temporary male breasts? what are some reasons someone would be sensitive to melatonin?

A doctor has provided 1 answer

Minor mystery: I didn't believe it either, but there are some credible accounts in real medical journals of men who get gynecomastia on taking melatonin and it regresses when it's withdrawn. This remains a puzzler. I'm going to assume (perhaps wrongly) that the melatonin pills were actually what they were supposed to be -- many supplements are not. Glad you're better.

Answered 8/28/2013

4.9k views

Thank

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