Magnesi-Om

Magnesi-Om is the pretty amber-jar magnesium powder that rode TikTok's 'Sleepy Girl Mocktail' trend, and Moon Juice now bills its site as the drink's home. One teaspoon stirred into water provides 310 mg of magnesium from three forms (citrate 204 mg, gluconate 77 mg and acetyl taurinate 28 mg, per the brand) plus 112 mg of L-theanine, sweetened with monk fruit and flavored with fruit or lemon.

The formula is more modest than the marketing. Two-thirds of the magnesium comes from citrate, a form known for pulling water into the gut, which is why the brand also lists regularity as a benefit. Evidence that magnesium improves sleep is limited: a 2021 meta-analysis of three small trials in older adults found people fell asleep about 17 minutes faster, but rated the evidence low to very low quality. The 112 mg of L-theanine is also below the 200-450 mg daily range a 2025 systematic review linked to better sleep. And 310 mg sits close to the NIH's 350 mg daily upper limit for magnesium from supplements, so stacking it with another magnesium product is not wise.

Reviews split clearly. TikTok creators with hundreds of thousands of views describe sleeping through the night, and buyers consistently praise the taste. Others, including a dietitian reviewer and several creators, found little difference for the price, and buyers mention stomach pain, cramping and powder that does not always dissolve well. Moon Juice says ingredients are tested for identity, microbes and heavy metals and that the finished product is retested at a third-party lab to meet California Prop 65 limits, but there is no named certification. At $44 for 30 servings, it costs several times more per serving than many plain magnesium glycinate capsules.