Best for Digestion
Best Magnesium for Digestion
Top 4 products ranked · Reviewed May 2026 · 100–400 mg clinical dose
Why Magnesium for Digestion
Magnesium plays a supporting role in digestion. Cofactor in over 300 enzymatic reactions including energy production, protein synthesis, and nervous system regulation. Magnesium glycinate is preferred for calm and sleep support with minimal GI effects, threonate (Magtein) crosses the blood-brain barrier for cognitive benefits, and citrate has a mild laxative effect useful for constipation.
What dose to look for
Clinical studies typically use 100–400 mg of magnesium. Common clinical supplemental range; RDA for total intake is 310-420 mg. Products below this range may not deliver meaningful results.
What form to look for
Avoid magnesium oxide — low absorption (~4%). Avoid magnesium stearate — filler, not a bioavailable form. Look for magnesium glycinate or magnesium citrate for better absorption.
What the research says
Magnesium has strong clinical evidence for digestion benefits. Meta-analyses confirm benefits for blood pressure, sleep, and glucose; ~50% of adults may be subclinically deficient Learn more
Top 4 Magnesium products
AG1
Greens Powder
magnesium glycinate · 26 mg
Rainbow Light
Women's One 50+, Daily Multivitamin, High Potency, 60 Vegetarian Tablets
magnesium oxide · 50 mg
Rainbow Light
Women's One Daily Multivitamin, High Potency, 60 Vegetarian Tablets
50 mg
Dr. Hydrate
All-In-One Drink Grape Jar
magnesium citrate · 63 mg