A form of magnesium
Magnesium citrate supplements
2,739 magnesium products in the NIH label database list magnesium as magnesium citrate (18% of the 15,088 magnesium products); their median is 113 mg of magnesium per serving, against 86 mg across all magnesium products; the 209 whose only supplement ingredient is magnesium list a median of 250 mg (DSLD version 9.4.0, January 2026).
How does magnesium citrate compare with the other forms?
The median amount of magnesium per serving in products naming each form; the count in brackets. The amount is the magnesium the label gives, as printed (the Supplement Facts row normally states the element; a row named as the compound usually gives the compound's weight and is left out of these figures).
Median magnesium per serving by form
Source: Supplement Facts rows and their forms, NIH ODS Dietary Supplement Label Database version 9.4.0, current labels.
- Products
- 2,7392,046 on the market
- Median magnesium per serving
- 113 mgall magnesium products: 86 mg
- Share of magnesium products
- 18%2,739 of 15,088
Is the amount the magnesium or the whole magnesium citrate?
A Supplement Facts row normally states the magnesium itself (a row like "Magnesium (as magnesium citrate)"); a row named as the compound (a row like "Magnesium citrate") usually states the compound's weight, which includes what the magnesium is bound to and is larger than the magnesium it supplies. The front of a bottle may print either. Of the 2,739 products here, 2,704 give the magnesium in its own row (36 of them an amount far outside what other labels list, or one their own %DV disagrees with); 10 give only a row named as the compound, left out of the medians and counts on this site; 25 give no amount of their own or one in another unit.
The adult Tolerable Upper Intake Level for magnesium is 350 mg a day; it covers magnesium from supplements and medicines only, not food or water. At the most servings their labels direct, 607 of the 2,668 magnesium citrate products with a plausible amount (22.8%) give more than that.
Source: Supplement Facts rows of each product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; upper limit: Institute of Medicine Dietary Reference Intakes (2011) (what counts as plausible).
What else do these products contain?
| Ingredient | Share of these products | Median here | Median, all products |
|---|---|---|---|
| Calcium | 65% | 175 mg | 115 mg |
| Vitamin D | 53% | 10 mcg | 15 mcg |
| Zinc | 50% | 10 mg | 11 mg |
| Vitamin B6 | 47% | 10 mg | 6 mg |
| Vitamin C | 46% | 136 mg | 100 mg |
| Vitamin B12 | 41% | 50 mcg | 36 mcg |
| Potassium | 41% | 75 mg | 99 mg |
| Folate | 39% | 400 mcg | 400 mcg |
| Niacin | 38% | 25 mg | 20 mg |
| Pantothenic Acid (Vitamin B5) | 37% | 25 mg | 12 mg |
Which products are they?
60 of the 2,739 (on-market products first, the newest label first), ordered by the amount of magnesium per serving, largest first; an amount that looks like a slip or a compound's weight comes last, marked.
- Magnesium Potassium AspartateCountry Life Target-Mins600 mg
- Cal-Mag Citrate with Vitamin D-3 & K-2 2:1 RatioSolaray500 mg
- Calcium Magnesium ZincSolaray500 mg
- Enhanced Absorption Calcium Magnesium 2:1 Ratio with Vitamin D-2Solaray500 mg
- Life Extension Mix Tablets with Extra NiacinLife Extension420 mg
- Magnesium Citrate 400 mgNOW400 mg
- Magnesium Citrate 400 mgSolaray400 mg
- Active Women's MultivitaminSuper Nutrition400 mg
- Calcium Magnesium Zinc & Vitamin D3Pure Naturals400 mg
- Perfect MagnesiumPerfect Supplements383 mg
- Calcium & MagnesiumButterfly Express333 mg
- Tri-MagnesiumIntegrative Therapeutics300 mg
- Cal Mag CrystalsDNA Dynamic Nutritional Associates300 mg
- Alive! Calcium Bone Support 1,200 mgNature's Way264 mg
- Calcium & Magnesium Mineral Complex 750 mgNature's Way250 mg
- Magnesium Citrate Softgels 250 mgNature's Truth250 mg
- Cal-Mag Zinc + D3Paradise Earth's Blend250 mg
- Fast Absorption Magnesium Citrate 250 mgMason Natural250 mg
- Women's Fermented MultivitaminCodeage220 mg
- Bone ComplexPrimeGENIX200 mg
- Lean PMJacked Factory150 mg
- Build PMJacked Factory150 mg
- Electrolyte Powder Cucumber & Lime FlavorDr. Berg120 mg
- Electrolyte Powder Grape FlavorDr. Berg120 mg
- Electrolyte Powder LemonadeDr. Berg120 mg
- Electrolyte PowderDr. Berg120 mg
- Electrolyte Powder Orange FlavorDr. Berg120 mg
- Electrolyte Powder Variety PackDr. Berg120 mg
- Stay A SleepSignature Supplements100 mg
- AnxietameLogos Nutritionals100 mg
- Core Daily 1 for WomenCountry Life100 mg
- Teen Fermented Multivitamin+Codeage95 mg
- Glow Sticks Sun-Kissed CitrusSeroVital84 mg
- Sleep Well Gummy Berry FlavoredNature's Way84 mg
- Glucoprin +BioPerineApproved Science50 mg
- Multi-ADEKCelebrate50 mg
- Mutli-ADEKCelebrate50 mg
- Calcium PLUSCelebrate50 mg
- Core Daily-1 for Men 50+Country Life50 mg
- Electrolyte CapsulesDr. Berg50 mg
- Adrenal ManagerXYMOGEN45 mg
- AdrenaMed GL50NuMedica45 mg
- Women's Golden MultivitaminSolaray40 mg
- Calcium PLUS 500 Mixed FruitCelebrate34 mg
- Calcium PLUS 500 Cherry TartCelebrate34 mg
- Mineral Citrate ComplexSwanson30 mg
- Mens Multi+Butterfly Express25 mg
- Multivitamin Soft Chews Very CherryCelebrate25 mg
- Dry XTJacked Factory25 mg
- Acid Rescue Mint FlavorCountry Life20 mg
- C4 Ultimate Hawaiian Punch Fruit Juicy RedCellucor20 mg
- C4 Ultimate Shred Creamsicle Orange CreamCellucor20 mg
- C4 Ultimate Strength Frozen BombsicleCellucor20 mg
- C4 Ultimate Strength WatermelonCellucor20 mg
- Kid Vits Juicy OrangeNOW Kids20 mg
- Acid Rescue On-The-Go Berry FlavorCountry Life20 mg
- B-KalmPlexusInterPlexus Whole Body Health12 mg
- One Daily Superfood Multi-Vitamin No IronParadise Earth's Blend10 mg
- CalmifyJoySpring6.75 mg
- Mag Oxy Colon CleanzSignature Supplements1,400 mg (possible slip)
Source: NIH ODS Dietary Supplement Label Database version 9.4.0; the form each label names for its row. Daily Values: the FDA's Daily Value page.
Which brands make them?
Nature's Way (63), Country Life (57), Douglas Laboratories (50), Pure Encapsulations (49), Metagenics (48), NOW (43), Natural Factors (33), Thorne Research (33), Kirkman (31), Integrative Therapeutics (28).