Does Melatonin interact with Magnesium Glycinate?

Written to our editorial standards · reviewed against published research· Updated 2 Jun 2026
Take together· moderate evidence

Sleep onset plus relaxation.

Melatonin is a timing signal that tells your body it is night and shortens how long it takes to fall asleep, while magnesium relaxes muscle and the nervous system, so one cues sleep and the other helps your body settle into it.

What to do

A sensible evening pair taken 30 to 60 minutes before bed. Start melatonin low, around 0.5 to 1 mg, since more is not better and can leave you groggy, alongside about 200 to 400 mg of magnesium glycinate.

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Melatonin
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Magnesium Glycinate
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Common questions

Can I take Melatonin and Magnesium Glycinate together?
Take together. A sensible evening pair taken 30 to 60 minutes before bed. Start melatonin low, around 0.5 to 1 mg, since more is not better and can leave you groggy, alongside about 200 to 400 mg of magnesium glycinate.
Why do Melatonin and Magnesium Glycinate interact?
Melatonin is a timing signal that tells your body it is night and shortens how long it takes to fall asleep, while magnesium relaxes muscle and the nervous system, so one cues sleep and the other helps your body settle into it.

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Educational use only, not medical advice. Interaction risk depends on dose, your health, and any medications. Always consult a qualified clinician, especially if you take prescription drugs or are pregnant or nursing.