Magnesium: More than 2 in 3 people are deficient. Here are the best forms to supplement with and those to avoid.

Magnesium glycinate

Magnesium glycinate (magnesium bound to glycine, a non-essential amino acid) is one of the most bioavailable and absorbable forms of magnesium, and also the least susceptible to diarrhea. It is the safest option for supplementing long-term deficiencies.

Magnesium chloride

Although magnesium chloride contains only about 12% elemental magnesium, it has an impressive absorption rate and is the best form of magnesium for cell and tissue detoxification. Furthermore, chloride (not to be confused with the toxic gas chlorine) supports kidney function and can stimulate a sluggish metabolism.

Magnesium carbonate

Magnesium carbonate is another popular, bioavailable form of magnesium that, when combined with hydrochloric acid in the stomach, converts to magnesium chloride. It’s a good choice for people suffering from indigestion and acid reflux because of its antacid properties.