Supplements
Magnesium in supplements · page 134
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 134 of 209
Q
Quell Fish Oil EFA PlusDouglas Laboratories · Softgel Capsule100 mg per serving1
100% Whey Protein Isolate Bourbon Banana NutNutraBio · Powder22 mg per serving1
100% Whey Protein Isolate Pancakes & Maple SyrupNutraBio · Powder22 mg per servingM
MET-Rx Protein Plus VanillaMET-Rx · Powder32 mg per servingO
Organic Beet RootAntler Farms · Powder6.0 mg per servingP
Prebiotic Colon Care CapsulesYerba Prima · Capsule20 mg per servingP
Prebiotic Colon Care FormulaYerba Prima · Powder50 mg per servingP
Pre-Workout Drink Mix Dragon FruitYes You Can! · Powder20 mg per serving
D
Designer Whey Vanilla PralineDesigner Whey · Powder110 mg per servingN
NOS Blast Creatine Nitro SolutionPrecision Engineered · Powder100 mg per serving1
100% Whey Protein Fuel Strawberry SmashTwinlab · Powder25 mg per serving1
100% Whey Protein Fuel Vanilla SlamTwinlab · Powder20 mg per servingS
Superior Vitamin C 1000 mgCountry Life · Tablet or Pill25 mg per servingC
Cell Tech WatermelonMuscleTech Performance Series · Powder33 mg per servingE
Endurox R4 Fruit PunchPacificHealth Laboratories · Powder160 mg per servingE
Endurox R4 Tangy OrangePacificHealth Laboratories · Powder160 mg per servingE
Endurox R4 ChocolatePacificHealth Laboratories · Powder240 mg per servingE
Endurox R4 Tangy OrangePacificHealth Laboratories · Powder240 mg per servingE
Endurox R4 VanillaPacificHealth Laboratories · Powder240 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).