Which Magnesium Is Best for Sleep? Your Guide for Types and Usage

By Elizabeth Millard, Feb 23, 2026

Magnesium is a natural mineral that plays a role in hundreds of bodily functions, including muscle relaxation and nervous system regulation, which is why it can be helpful as a sleep aid, says Alex Dimitriu, M.D., a sleep medicine specialist and the founder of Menlo Park Psychiatry & Sleep Medicine in California. “Magnesium works by activating certain receptors in the nervous system for a calming effect and blocking others that are excitatory,” Dr. Dimitriu explains. It also enhances melatonin production, a naturally occurring hormone that is known for its role in regulating the sleep-wake cycle. Melatonin levels rise in the evening, making you drowsy—so magnesium’s extra boost may help bring better sleep, he adds.

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