BioStacksMagnesium and heart
Magnesium plays a important role in heart. 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. In clinical studies, magnesium supports heart rhythm and bone health.
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. Supplements that fall short of this threshold are unlikely to match what clinical trials achieved.
What form to look for
Avoid magnesium oxide — low absorption (~4%). Avoid magnesium stearate — filler, not a bioavailable form. For best results, choose magnesium glycinate or magnesium citrate.
What the research says
The clinical evidence for magnesium in heart is strong. Meta-analyses confirm benefits for blood pressure, sleep, and glucose; ~50% of adults may be subclinically deficient Learn more
