United States
Data
Supplements

Magnesium in supplements · page 205

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).

AgeMenWomenPregnancyBreastfeeding
0-6 months————
7-12 months————
1–3 years65 mg65 mg——
4–8 years110 mg110 mg——
9–13 years350 mg350 mg——
14–18 years350 mg350 mg350 mg350 mg
19–30 years350 mg350 mg350 mg350 mg
31–50 years350 mg350 mg350 mg350 mg
51+ years350 mg350 mg——

Source: NIH ODS Magnesium Fact Sheet for Health Professionals, Table 3 (updated 2026-01-06).

Supplements with Magnesium

10,004 shown · page 205 of 209

M
Magnesium GlycinateNHC Natural Healthy Concepts · Capsule120 mg per serving
M
Magnesium Oxide 300 mgNatural Grocers by Vitamin Cottage · Capsule300 mg per serving
M
Magnesium CitrateFreeda · Tablet or Pill420 mg per serving
M
Magnesium CitrateFreeda · Tablet or Pill420 mg per serving
M
Magnesium Citrate PowderFreeda · Powder420 mg per serving
M
Magnesium Complex 300 mgBronson · Tablet or Pill300 mg per serving
M
Magnesium 400 mgBronson · Capsule400 mg per serving
M
Molecular H2Allergy Research Group · Tablet or Pill80 mg per serving
M
Molecular H2 RaspberryAllergy Research Group · Tablet or Pill65 mg per serving
M
Magnesium 400 mgFuturebiotics · Capsule400 mg per serving
R
RiboctaneOrtho Molecular Products · Capsule75 mg per serving
W
White Kidney Bean ExtractHealthy Natural Systems · Tablet or Pill25 mg per serving
M
Magnesium GlycinateVinco's · Powder2,000 mg per serving
M
Magnesium L-ThreonateDr. Mercola · Capsule144 mg per serving
T
True Food Calcium & MagnesiumHigher Nature · Tablet or Pill120 mg per serving
M
Migra-Mag With Brain ShieldLife Extension · Capsule121 mg per serving
C
Constipation FormulaSchiff Digestive Advantage · Capsule400 mg per serving
M
Malic Acid with MagnesiumOL Olympian Labs · Capsule300 mg per serving
M
Muscle RecoveryVitamer Laboratories · Capsule15 mg per serving
N
Neuro-Mag Magnesium L-ThreonateLife Extension · Capsule144 mg per serving
A
Active MagnesiumSeeking Health · Tablet or Pill100 mg per serving
M
Magnesium 500 mgSundown · Other (e.g. tea bag)500 mg per serving
E
Epsom SaltDr. Clark Research Association Dr. Clark Zentrum · Capsule381 mg per serving
M
Magnesium CitrateEnergetic Nutrition · Capsule140 mg per serving
M
Magnesium 300 mgDr. Clark Store · Capsule300 mg per serving
M
Magnesium Citrate 110 mgDr. Clark Store · Capsule330 mg per serving
M
Magnesium 300 mgDr. Clark Store · Capsule300 mg per serving
M
Magnesium Threonate 500 mgAbsorb Health · Capsule500 mg per serving
M
Magnesium 500 mgMajor · Tablet or Pill500 mg per serving
M
Mag GlycinateMetagenics · Tablet or Pill100 mg per serving
M
Mag GlycinateMetagenics · Tablet or Pill100 mg per serving
M
Magnesium CitrateBio-Tech Pharmacal · Capsule150 mg per serving
M
Magnesium CitrateBio-Tech Pharmacal · Capsule150 mg per serving
C
Chelated MagnesiumSolgar · Tablet or Pill400 mg per serving
C
Chelated MagnesiumSolgar · Tablet or Pill400 mg per serving
M
Magnesium Citrate 200 mgtnvitamins · Tablet or Pill400 mg per serving
M
Magnesium Complex 400 mgtnvitamins · Capsule400 mg per serving
M
Magnesium Glycinate 400 mgThe Vitamin Shoppe · Capsule400 mg per serving
C
Chelated MagnesiumSolgar · Tablet or Pill400 mg per serving
M
Magnesium CitrateSolgar · Tablet or Pill420 mg per serving
M
Magnesium CitrateSolgar · Tablet or Pill420 mg per serving
M
Magnesium (Glycinate)Pure Encapsulations · Capsule120 mg per serving
M
Magnesium Citrate 150 mg Key LimeNatural Factors · Tablet or Pill150 mg per serving
M
Magnesium Citrate 150 mgNatural Factors · Capsule150 mg per serving
M
Magnesium Citrate 150 mgNatural Factors · Capsule150 mg per serving
M
Magnesium Bisglycinate 200 mgNatural Factors · Powder200 mg per serving
M
Magnesium OxideNutricost · Capsule420 mg per serving
E
Epsom SaltDr. Clark Research Association Dr. Clark Zentrum · Liquid380 mg per serving

Label 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).