Supplements
Magnesium in supplements · page 80
10,004 supplements on the U.S. market list Magnesium with an amount per serving. The official Tolerable Upper Intake Level for adults is 350 mg a day (supplemental magnesium only (not magnesium in food)).
Tolerable Upper Intake Level (UL)
The highest daily amount that is unlikely to cause harm for almost all healthy people; it applies to supplemental magnesium only (not magnesium in food).
| Age | Men | Women |
|---|---|---|
| 0-6 months | — | — |
| 7-12 months | — | — |
| 1–3 years | 65 mg | 65 mg |
| 4–8 years | 110 mg | 110 mg |
| 9–13 years | 350 mg | 350 mg |
| 14–18 years | 350 mg | 350 mg |
| 19–30 years | 350 mg | 350 mg |
| 31–50 years | 350 mg | 350 mg |
| 51+ years | 350 mg | 350 mg |
Source: NIH ODS Magnesium Fact Sheet for Health Professionals, Table 3 (updated 2026-01-06).
Supplements with Magnesium
10,004 shown · page 80 of 209
T
Trulean VanillaMET-Rx 180(0) · Powder0.00 NP per servingM
Matrix 1.0 Milk ChocolateSyntrax · Powder0.00 NP per servingN
Nectar Apple EcstasySyntrax · Powder0.00 NP per servingO
Organic Forti-FlaxBarlean's · Powder59 mg per servingM
Mega MenGNC Mega Men · Other (e.g. tea bag)100 mg per servingP
Pre-Natal Multivitamin With DHAProtocol For Life Balance · Softgel Capsule200 mg per servingB
Bulk 1340 Strawberries & CreamGNC Pro Performance · Powder220 mg per servingA
Airborne Dual Action CitrusAirborne · Tablet or Pill40 mg per servingB
Bulk 1340 Double ChocolateGNC Pro Performance · Powder300 mg per servingA
Active VanillaGNC Women's Ultra Mega · Powder50 mg per servingC
Complete Multivitamin Women's 50+Equate · Tablet or Pill50 mg per servingC
Coral CalciumCalifornia Academy of Health · Powder250 mg per servingK
Kids Non-GMO Multivitamin Fruit Punch FlavorSundown Naturals · Powder58 mg per servingS
Sport ChocolateGNC Mega Men · Powder50 mg per servingS
Sport VanillaGNC Mega Men · Powder50 mg per servingI
Immu-Support FormulaDouglas Laboratories · Tablet or Pill300 mg per servingA
A-Z Multivitamins & MineralsSimply Supplements · Tablet or Pill5.0 mg per servingP
Proteozyme ForteDouglas Laboratories · Tablet or Pill75 mg per servingF
Fifty Plus FormulaSimply Supplements · Tablet or Pill45 mg per servingLabel data: NIH Office of Dietary Supplements, Dietary Supplement Label Database (dsld.od.nih.gov), public domain. Upper limits: NIH ODS Fact Sheets for Health Professionals (values from the Institute of Medicine, Food and Nutrition Board).