mineral

Magnesium supplements

Half of the 14,003 magnesium supplements in the NIH label database that print an amount list 86 mg or less per serving; the middle half list 30 mg to 200 mg, and 15% of the 13,789 with a plausible amount give more than the adult upper limit at the most servings their labels direct (DSLD version 9.4.0, January 2026). The 823 products whose only supplement ingredient is magnesium list a median of 240 mg, and 45% of them give more than the upper limit.

How much magnesium do supplements contain?

The median product lists 86 mg per serving. One in ten lists 12 mg or less, one in ten 320 mg or more. The amount printed most often is 100 mg (1,632 products).

How do the amounts compare with the Daily Value and the upper limit?

The FDA Daily Value for magnesium is 420 mg (adults and children 4 and older). The median product gives 20% of it per serving; the 90th percentile 76%.

The adult Tolerable Upper Intake Level is 350 mg a day (magnesium from supplements and medicines only (not food or water)). At the most servings their labels direct, 2,019 of the 13,789 products with a plausible amount (14.6%) give more than that from the supplement alone (what counts as plausible).

The upper limit is for total intake from food, water and supplements unless stated, and does not apply under medical supervision. A label amount is what the maker printed. This is data, not advice: the NIH ODS fact sheets explain what each nutrient does.

Which forms of magnesium do labels name?

Magnesium oxide is the form named most often: 5,110 of the 15,088 magnesium products (34%), ahead of magnesium citrate (2,739, 18%) and magnesium glycinate (1,307, 9%). A product naming two forms counts in both; the table below gives every form.

• Magnesium oxide
• Magnesium citrate
• Magnesium glycinate
• Magnesium aspartate
• Magnesium malate
• Magnesium carbonate
• Magnesium gluconate
• Magnesium hydroxide
• Magnesium taurate
• Magnesium chloride
• Magnesium L-threonate
• Magnesium lactate
• Magnesium orotate

Which products list the most magnesium?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

• Part III: Mineral Digestive SweepNature's Way1,100 mg
• Oxygen CleanseThe Vitamin Shoppe1,035 mg
• Mag O7Pure Vegan1,035 mg
• MagO7Aerobic Life1,035 mg
• Mag O7Aerobic Life1,035 mg
• Mag O7 PowderAerobic Life1,035 mg
• Mag O7NB Pure Pure Vegan1,035 mg
• MagO7NB Pure Pure Vegan1,035 mg

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 66 mg; those entered in 2025, 100 mg.

In which products and brands?

Brands listing it most: Douglas Laboratories (301), Nature's Plus (215), Nature's Way (181), NutraBio (170), Bluebonnet (119), NOW (116), Country Life (111), Trace Minerals Research (103), Pure Encapsulations (95), Bronson (94).

Every product listing magnesium

15,088 products, A to Z by name (page 76 of 302), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Core Level Adrenal 60 TabletsNutri-West20 mg
• Core Level BileNutri-West10 mg
• Core Level Health ReserveNutri-West16 mg
• Core Level IleoduodenalNutri-West2 mg
• Core Level KidneyNutri-West15 mg
• Core Level LungNutri-West8 mg
• Core Level MagnesiumNutri-West52 mg
• Core Level ManganeseNutri-West6 mg
• Core Level PancreasNutri-West15 mg
• Core Level PepsinNutri-West7 mg
• Core Level PotassiumNutri-West8 mg
• Core Level RNANutri-West40 mg
• Core Level ThiamineNutri-West14 mg
• Core MineralsUSANA CellSentials · off the market113 mg
• Core MineralsResearched Nutritionals0.3 mg as transcribed, likely a slip
• Core MineralsUSANA113 mg
• Core MRP Banana CreamCore Nutritionals · off the market150 mg
• Core MRP Peanut Butter Oatmeal CookieCore Nutritionals · off the market100 mg
• Core MRP VanillaCore Nutritionals133 mg
• Core MultiKlaire Labs · off the market75 mg
• Core Nutrition SystemAdvoCare300 mg
• Core SupportOrtho Molecular Products100 mg
• Core Support ChocolateOrtho Molecular Products110 mg
• Core Support French VanillaOrtho Molecular Products110 mg
• CoreplexAdvoCare Well175 mg
• CorePlexAdvoCare175 mg
• CorePlex with IronAdvoCare175 mg
• Cortico-B5B6Metagenics75 mg
• Cortisol HealthLES Labs100 mg
• CortiXMM Sports Nutrition50 mg
• Corvalen M RiboseDouglas Laboratories40 mg
• CorvitaTrigen Laboratories35 mg
• Corvite 150Vertical Pharmaceuticals10 mg
• Corvite FeVertical Pharmaceuticals15 mg
• Corvite FreeVertical Pharmaceuticals35 mg
• Cr5PMD100 mg
• Crafted Blend Vitamin C Zesty OrangeAirborne40 mg
• Cramp Bark ExtraVitanica60 mg
• Cramprin +BioPerineApproved Science420 mg
• Cran-PlusBotanic Choice7 mg
• Cran-UTIEcological Formulas15 mg
• Cranberry BenefitsProCaps Laboratories25 mg
• Cranberry BenefitsProCaps30 mg
• Cranberry with D-MannoseProCaps Laboratories30 mg
• Crash Blue RazzPS ProSupps · off the market7 mg
• Crash Blue RazzProSupps7 mg
• Crash Fruit PunchPS ProSupps · off the market7 mg
• Crash Fruit PunchProSupps7 mg
• CravingsmyDNAhealth10 mg as transcribed, likely a slip
• Cre+ Blue RazEvlution Nutrition80 mg

Where next?

• Liquid magnesium
• Magnesium capsules
• Magnesium drops
• Magnesium for women
• Magnesium gummies
• Magnesium powder
• Check an amount of magnesium
• Labels above the upper limit
• All ingredients