How Much Magnesium Do You Need?
There are several factors that affect how much magnesium your body needs, including age and reproductive status.
Daily Needs by Life Stage
Here are the generally recommended dietary allowances (RDAs) for magnesium:*
Children
- Under six months: 30 mg
- 7 to 12 months: 75 mg
- 1 to 3 years: 80 mg
- 4 to 8 years: 130 mg
- 9 to 13 years: 240 mg
- 14 to 18 years: 410 mg male/360 mg female
Adults
- 19 to 30 years: 400 mg male/310 mg female
- 19 to 30 years pregnant female: 350 mg
- 19 to 30 years nursing female: 310 mg
- 31+ years: 420 mg male/320 mg female
- 31+ years pregnant female: 360 mg
- 31+ years nursing female: 320 mg
Be sure to discuss your personal needs with a doctor to determine the best plan of action for maximum benefit.
You be well, now.
Swanson
*Source: Magnesium. National Institutes of Health. Accessed July 2025. Read source *These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
