Magnesium is a mineral that is abundant in the body, many foods, medicines, and is available as a dietary supplement. Research has found that it is potentially a safe option for migraine prevention.
Magnesium deficiency is related to factors that promote headaches, and people who get migraines may have lower levels of magnesium in their bodies than those who do not. The guidelines from the American Academy of Neurology and the American Headache Society say that magnesium is probably effective and should be considered for migraine prevention.
Magnesium supplements are available in a variety of forms, including magnesium oxide, citrate, and chloride. The Supplement Facts panel on a dietary supplement label declares the amount of elemental magnesium in the product, not the weight of the entire magnesium-containing compound.
Always consult with your doctor before taking magnesium or any supplement for migraines. Dosage will vary depending on the supplement, age, and sex.
High doses of magnesium supplements can cause diarrhea, nausea, cramping, and interactions with other medications.