Headaches: What You Need To Know
NCCIH
Supports limited preventive evidence and controls magnesium safety, interaction, and clinician-supervision boundaries.
Reviewed guidance
Magnesium for migraine
A small body of controlled research suggests oral magnesium may reduce migraine frequency for some people, but evidence is limited and studied doses can cause adverse effects or interact with medicines. It belongs in prevention, not acute rescue.
What this means
Clinician-supervised oral magnesium supplementation as an optional preventive adjunct for recurrent migraine; not an acute rescue treatment and not an efficacy claim for magnesium-rich food, bath salts, topical sprays, or arbitrary supplement doses.
How to use it: Do not infer migraine efficacy from magnesium-rich foods, baths, topical magnesium, or a generic recipe. If oral magnesium is considered, choose a labeled supplement only after reviewing kidney function, medicine interactions, formulation, and dose with a clinician or pharmacist.
Safety & cautions
Supplemental magnesium can cause diarrhea, nausea, and abdominal cramping; very large doses can be dangerous. Kidney disease increases toxicity risk. Magnesium can interact with some antibiotics, diuretics, and osteoporosis medicines.
Get medical care for symptoms that are severe, last longer than expected, get worse, or otherwise concern you.
Household preparations
Practical ways to use the ingredient may not provide the same form or amount discussed in the evidence.
Evidence transparency
Evidence & sources
Choosing the Right Preventive Treatment
American Headache Society
Supports regular sleep, meals, exercise, and preventive-care framing ahead of supplements.
Migraine
NHS
Controls migraine self-care, recurrent-pattern review, and urgent headache red flags.
Incorporating Nutraceuticals for Migraine Prevention
American Headache Society
Professional migraine source places magnesium among preventive nutraceuticals and explicitly no longer recommends butterbur.