United States
Data
Supplements

Magnesium in supplements · page 209

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 209 of 209

T
True Food MagnesiumHigher Nature · Tablet or Pill50 mg per serving
M
Magnesium 500 mgRexall · Tablet or Pill500 mg per serving
K
Kids' Magnesium CitrateLifeTime · Powder200 mg per serving
M
Magnesium (Citrate) 150 mgVQ Verified Quality · Capsule150 mg per serving
M
Magnesium (Glycinate/Malate) 120 mgVQ Verified Quality · Capsule120 mg per serving
O
Opti-MagVitamin Research Products · Capsule240 mg per serving
M
Magnesium 250 mgup&up · Tablet or Pill250 mg per serving
H
High Potency Magnesium 500 mgVitamin World · Other (e.g. tea bag)500 mg per serving
M
Magnesium Citrate 250 mgVitamin World · Capsule250 mg per serving
M
Magnesium CitrateVitamin World · Capsule100 mg per serving
M
Magnesium Glycinate ChelateDesigns for Health · Capsule300 mg per serving
M
MagCitrate PowderDesigns for Health · Liquid300 mg per serving
M
Magnesium Malate ChelateDesigns for Health · Tablet or Pill500 mg per serving
M
Magnesium Glycinate ChelateDesigns for Health · Capsule300 mg per serving
M
Magnesium Malate ChelateDesigns for Health · Tablet or Pill500 mg per serving
N
Natural CalmNatural Vitality · Powder255 mg per serving
N
Natural Magnesium 250 mgSunmark · Tablet or Pill250 mg per serving
M
Mag-Tea GDouglas Laboratories · Liquid250 mg per serving
G
Genuine Phillips' CapletsBayer Phillips' · Other (e.g. tea bag)500 mg per serving
M
Magnesium 250 mg USPEqualine · Tablet or Pill250 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).