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A female asked:

I took nyquil and im not drowsy, would it be bad to take melatonin?

2 doctor answers2 doctors weighed in
Dr. Thomas Knecht
A Verified Doctoranswered
32 years experience
Perfectly safe: Hi. While no study has ever looked at the safety/efficacy of melatonin and chlorpheniramine (the sedating antihistamine in Nyquil), what we know about their pharmacology suggests they should be perfectly safe in combination. Insomnia is awful and affects so many people! I wish you good sleep!
Dr. Michael Kleerekoper
A Verified Doctor commented
A US doctor answered Learn more
Agree. Michael Kleerekoper
Jun 10, 2016
Dr. Michael Kleerekoper
A Verified Doctoranswered
Endocrinology 52 years experience
Melatonin: It won't hurt you to try melatonin for a while but it may not be as good as you hope. When you say you are not drowsy with nyquil what exactly do you mean? How long can you sleep at night?

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