Exploring Magnesium's Role in Foot Pain Relief and Recommended Daily Intake

Magnesium, particularly in the form of magnesium sulfate (commonly known as Epsom salt), can provide relief for foot pain by being used as a soaking solution. It is often used to relieve minor sprains, bruises, muscle aches, joint stiffness, and tired feet¹². However, while magnesium supplements are popular for muscle cramps, there is limited evidence supporting their effectiveness specifically in treating muscle cramps or foot pain. A review of studies found no significant difference in cramp intensity or duration between those taking magnesium supplements and those taking a placebo³.

Soaking your feet in a solution of magnesium sulfate may help provide some relief due to the relaxation and pain relief benefits associated with magnesium absorption through the skin¹. For foot pain, using a topical application such as a foot bath with Epsom salts may be beneficial.

Footnotes

1. Mayo Clinic - Magnesium Sulfate Proper Use ↩ ↩²

2. Mayo Clinic - Magnesium Sulfate Side Effects ↩

3. Harvard T.H. Chan School of Public Health - Magnesium ↩

Here are some magnesium formulations available on the market:

• Dr. Mercola - Magnesium L-Threonate - $38.47
• MegaFood - Relax + Calm Magnesium Soft Chews, Grape - $13.99
• BodyBio - Calcium/ Magnesium Butyrate - $34.99
• Nutricost - Magnesium+ - $19.95
• Solaray - Magnesium - $12.49

The recommended daily intake of magnesium varies depending on age, sex, and life stage. According to the National Institutes of Health (NIH), here are the general guidelines:

Recommended Daily Allowance (RDA) for Magnesium:

Age Group	Male	Female
Infants (0-6 months)	30 mg	30 mg
Infants (7-12 months)	75 mg	75 mg
Children (1-3 years)	80 mg	80 mg
Children (4-8 years)	130 mg	130 mg
Children (9-13 years)	240 mg	240 mg
Adolescents (14-18 years)	410 mg	360 mg
Adults (19-30 years)	400 mg	310 mg
Adults (31+ years)	420 mg	320 mg
Pregnant teenagers		400 mg
Pregnant adults		350 mg
Breastfeeding teenagers		360 mg
Breastfeeding adults		320 mg

It's also essential to note the tolerable upper intake levels, which are the maximum daily intake unlikely to cause adverse health effects. For adults, the upper limit for supplemental magnesium is 350 mg/day. However, this limit does not include dietary (food) sources of magnesium¹.

While taking magnesium supplements, it is important to adhere to these guidelines and consider the amount of magnesium you obtain from both food and supplements. Overconsumption of magnesium from supplements can lead to side effects such as diarrhea, nausea, and abdominal cramping².

Footnotes

1. National Institutes of Health, "Magnesium," NIH Office of Dietary Supplements, 2024. ↩

2. Mayo Clinic, "Magnesium - Proper Use," Mayo Clinic. ↩