Mag-Ox 400 High Potency Magnesium Supplement, 120 Tablets, 2 Pack Review
Mag-Ox 400 Magnesium Mineral Dietary Supplement Tablets provide the most potent and concentrated form of magnesium available in a pure pharmaceutical grade formula. Recognized as the number one pharmacist recommended brand by U.S. News & World Report and Pharmacy Times for both 2016-2017 and 2018-2019, this unflavored supplement is specifically designed to support overall health, metabolism, and everyday vitality. Each two-pack contains a total unit count of 240 tablets, with 120 tablets per bottle, weighing 9.6 ounces and measuring 5.35 by 4.57 by 2.28 inches. The improved formula features tablets that are now coated to make them much easier to swallow. Each tablet delivers 483 mg of magnesium oxide alongside inactive ingredients including microcrystalline cellulose, croscarmellose sodium, magnesium stearate, and silicon dioxide. Furthermore, the supplement is completely sugar-free, gluten-free, and abalone-free to accommodate various dietary needs. Consistent daily magnesium intake ensures full health benefits by helping to maintain normal muscle and nerve function, supporting healthy heart rhythms, aiding in the bodily absorption of essential minerals like calcium and potassium, and supporting proper glucose metabolism. For suggested use, adults should take two tablets daily with food or as directed by a healthcare professional, and always follow the directions on the packaging. Regarding safety information, if you are pregnant or nursing, taking medication, or have kidney disease, you must consult your physician before taking this product. Users should be aware that magnesium oxide may have a laxative effect. The bottles should be kept out of reach of children, and the product should not be used if the seal under the bottle cap is broken or missing. This product is labelled to United States standards and may differ from similar products sold elsewhere in its ingredients, labeling, and allergen warnings. Statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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Supplement Facts
Magnesium 482.6 mg
| Magnesium (as Magnesium Oxide) | 482.6 mg |
Other ingredients: Microcrystalline Cellulose, Hydroxypropyl Cellulose, Crospovidone, Hypromellose, Maltodextrin, Magnesium Stearate, Silicon Dioxide, PEG.
Directions: Take 2 tablets daily with food or as directed by a healthcare professional.
Label source: Ebay · Report a label change
Where to Buy
Mag-Ox · Amazon · Walmart
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Graded October 28, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.

