Does Magnesium Help You Sleep? What Research Says

If you've been searching "does Magnesium help you sleep," you're far from alone. Magnesium is one of the most talked-about minerals for sleep on social media and in wellness circles—but the real answer requires an honest look at what the research actually shows.

Magnesium is the fourth most abundant cation in the human body, a cofactor in more than 300 enzyme systems, and plays critical roles in nervous system function, muscle relaxation, energy production, and bone health. Nature's Sunshine Magnesium provides 250 mg of Magnesium (as Magnesium oxide and Magnesium amino acid chelate) alongside a base of Licorice root, Kelp plant, Peppermint leaves, and White willow bark—designed to support these everyday processes that keep your body running smoothly.

Our naturopath is available for a free consultation if you'd like personalized guidance on whether Magnesium is a good fit for your wellness routine.

Preclinical studies support associations between Magnesium status and sleep quality, and the question "does Magnesium help you sleep" has prompted a growing body of human research. Here's an honest summary of what that research has found:

• A 2021 systematic review found only three randomized controlled trials, with 151 total participants. Results suggested Magnesium may help people fall asleep about 17 minutes faster, but the trials were small and low quality, and researchers didn't find that participants slept any longer.
• A 2022 observational study of nearly 4,000 participants found borderline improvement in sleep quality, though observational data cannot prove cause and effect.
• A 2023 systematic review saw benefits in observational trials but only contradictory results in randomized controlled trials, which also had few participants and short durations.
• The most recent systematic review (2024) found that five out of eight studies showed improvements in sleep, while two showed no benefit and one had mixed findings.
• A 2025 randomized, placebo-controlled trial found that 28 days of supplementation with 250 mg elemental Magnesium (as Magnesium bisglycinate) resulted in modest but statistically significant improvements in insomnia severity scores in adults with self-reported insomnia symptoms.

A systematic review also confirmed that the quality of available literature is substandard for physicians to make well-informed clinical recommendations on oral Magnesium for older adults with insomnia. In short, research suggests Magnesium may support sleep quality, but the evidence is still considered preliminary to weak for dedicated randomized controlled trial data. More large-scale, longer-term studies are needed.

While the sleep question draws a lot of attention, Magnesium's most well-established roles are in nervous system health, bone density, and muscle function—exactly what Nature's Sunshine formulated this product to support.

Nervous System Health

Magnesium is a natural NMDA receptor antagonist, meaning it helps modulate neuronal excitability and synaptic transmission. It plays a critical role in nerve signaling, and deficiency is associated with increased risk of neurological symptoms. This foundational role in nervous system function may be one reason researchers are interested in Magnesium's connection to sleep.

Muscle Relaxation and Cramps

Magnesium is the most studied mineral supplement for skeletal muscle cramps. It helps regulate muscle contraction by managing intracellular Calcium transport. When Magnesium levels are low, muscles may contract normally but struggle to fully relax. This product's formulation specifically highlights Magnesium's role as a muscle relaxant.

Bone Density

Magnesium is an essential cofactor in bone mineral metabolism and is required for vitamin D activation. Observational data from large cohort studies have found that higher Magnesium intake is associated with greater bone density in women. It influences the activities of both osteoblasts and osteoclasts—the cells responsible for building and breaking down bone.

Energy Production

Magnesium is required for energy production, oxidative phosphorylation, and glycolysis. It plays a pivotal role in ATP synthesis—ATP being the body's fundamental energy molecule. Without adequate Magnesium, cellular energy generation is impaired across virtually all tissues.

Research suggests that a significant portion of the population may not be getting enough Magnesium. It is estimated that between 56 and 68% of Americans do not obtain enough Magnesium in their diet to meet the recommended daily allowance. Men older than 70 and teenage girls are most likely to have low intakes.

Certain groups are more likely to have Magnesium inadequacy, including older adults (due to decreased absorption), individuals with gastrointestinal disorders, those with type 2 diabetes, people with alcohol dependence, and individuals on certain long-term medications such as diuretics or proton pump inhibitors.

As we age, Magnesium absorption and retention can decrease, making supplementation more relevant. Nature's Sunshine Magnesium is used by several hundred enzymes in their daily tasks and helps metabolize various nutrients such as vitamin C, Phosphorus, potassium, and sodium. Calcium and Magnesium are nutritional partners and work best when taken together.

If you're unsure whether a Magnesium supplement fits your needs, our naturopath offers free consultations to help you sort through the options.

Take 1 tablet daily with a meal. Each tablet provides 250 mg of Magnesium along with 40 mg of Calcium and 30 mg of Phosphorus in a base of Licorice root, Kelp plant, Peppermint leaves, and White willow bark. The bottle contains 180 tablets.