Can I take Melatonin with NAC?

Understanding the interactions, benefits, and safety of combining these two powerful supplements.

Melatonin
+
NAC

Short answer

We found no documented interaction between Melatonin and NAC in the sources below. That isn't proof the combination is right for you: check each one's cautions, and ask your pharmacist if you take medication.

Melatonin

What it is: A hormone the brain makes in the dark that helps set your sleep-wake clock.

What the research says: It may help with jet lag and some circadian sleep problems. Sleep-medicine guidelines say there isn't enough evidence to recommend it for chronic insomnia.

Cautions

  • Short-term use seems safe for most people; long-term safety isn't known.
  • Older adults may feel drowsy the next day.

Medicines to check

  • Blood thinners and epilepsy: use only under medical supervision

Source: NIH National Center for Complementary and Integrative Health: Melatonin: What You Need To Know (updated May 2024)

NAC (N-acetylcysteine)

What it is: An antioxidant that's both a hospital medicine (for acetaminophen overdose) and a supplement.

What the research says: As a medicine it treats acetaminophen poisoning. As a supplement, results for lung conditions and as an add-on for depression are mixed.

Cautions

  • It can cause stomach upset, nausea, diarrhea, tiredness or rash; less often low blood pressure or headache.

Medicines to check

  • Nitroglycerin: don't combine (severe headaches, lower blood pressure)
  • Antidepressants: animal studies suggest NAC may strengthen their effect
  • Cancer treatment: check with your care team

In Holitro: NAC (600 mg per capsule)

Source: Memorial Sloan Kettering Cancer Center, About Herbs: N-Acetylcysteine (updated October 2022)

Check with your doctor or pharmacist, especially if you take medication.

Check your stack — free

Educational information only, not medical advice. This reflects general ingredient overlap, not a personalized safety review. Always check with your doctor or pharmacist before combining supplements, especially if you take medication, are pregnant or nursing, or manage a health condition. These statements have not been evaluated by the FDA.

Stop Guessing Your Dosages.

Balancing dosages across multiple different bottles is risky, inefficient, and expensive. NAC is already lab-dosed and delivered daily in our Antioxidant Pack — one less bottle to manage.

Shop Antioxidant Pack