As sleep troubles plague millions of Americans, social media influencers and celebrities have increasingly promoted a seemingly simple solution: magnesium supplements. Videos extolling the benefits of these supplements rack up millions of views on platforms like TikTok, with some promoting concoctions like the viral “sleepy girl mocktail” — a blend of magnesium powder, tart cherry juice, and prebiotic soda.
But medical experts caution that scientific evidence supporting these claims remains limited and inconclusive.
“Whether it’s the placebo effect or actually benefiting from the magnesium — I try not to worry too much about that, because at the end of the day, they’re feeling better,” said Dr. Chester Wu, a psychiatrist and sleep specialist in Houston who has noted an increase in patients asking about magnesium supplements.
The mineral plays important roles in the body, helping regulate muscle and nerve function, blood sugar levels, and bone development. Some small studies suggest magnesium supplements may improve sleep quality in certain populations. A recent pilot trial found significant improvements in sleep duration, deep sleep, and sleep efficiency among adults taking magnesium compared to those on placebo.
However, more rigorous research paints a less clear picture. A systematic review examining magnesium supplementation for older adults with insomnia found only three relevant clinical trials, describing the literature as “substandard” with a “moderate-to-high risk of bias.”
“The evidence is limited,” according to Harvard Health, which notes that while some initial studies have shown magnesium may help with insomnia, it’s difficult to strongly support regular use based on current research.
Sleep specialists emphasize that before reaching for any supplement, underlying sleep hygiene issues should be addressed. “Sleep aids like magnesium can be helpful in the short term, but they are not a long-term solution for chronic sleep problems,” says Dr. Jonathan Wu. “Maintaining a regular sleep schedule, practicing good sleep hygiene and managing stress are often more effective for improving sleep in the long term.”
For those still interested in trying magnesium, experts recommend consulting a healthcare provider first, particularly for individuals with kidney disease or those taking certain medications. Dosing above 350 milligrams daily may cause side effects like stomach upset.
Many doctors remain open to patients exploring magnesium supplements given their relatively low risk profile when used appropriately. Dr. Fariha Abbasi-Feinberg, director of sleep medicine at Millennium Physician Group in Florida, takes a practical approach: “If you asked me, ‘Can I try the sleepy girl mocktail?’ I would say, ‘Sure. It probably won’t hurt you, but start with a low dose of the magnesium.'”
Health professionals generally agree that obtaining nutrients through diet is preferable to supplementation. Foods rich in magnesium include leafy greens like spinach and kale, seeds, nuts, salmon, beans, whole grains, and yogurt.
As research continues, the gap between viral social media claims and scientific evidence remains substantial. While magnesium supplements appear unlikely to cause harm for most individuals, their effectiveness as sleep aids awaits more definitive scientific validation.