Magnesium Compass
Magnesium Citrate Guide
Magnesium citrate is one of the forms NIH identifies as tending to have higher bioavailability than magnesium oxide.
Choosing a citrate product
Compare elemental magnesium, serving size and tolerability. High supplemental intakes can cause diarrhea, nausea and abdominal cramping, so more is not automatically better.
Sources & next steps
Primary references: NIH Office of Dietary Supplements, Magnesium: Health Professional Fact Sheet and Magnesium: Consumer Fact Sheet. Product details should always be checked against the current merchant label before purchase.