Magnesium glycinate: This well-absorbed form of magnesium is bound to an amino acid called glycine. It has relaxing and calming effects, magnesium glycinate is best taken at night before bed.

Magnesium citrate: Commonly used to support digestive health and relieve constipation, magnesium citrate is one of the most highly absorbable forms of magnesium. It can be taken in the morning or evening to ease and soften the passage of stool.

Magnesium chloride: When magnesium is paired with chloride ions, it forms magnesium chloride, a compound easily absorbed in the digestive tract. Although this form of magnesium is typically found in topical oils, sprays and lotions or sleep-promoting bath products.

Magnesium taurate: A combination of magnesium and the amino acid taurine, magnesium taurate is used for its potential cardiovascular and neurological benefits. This magnesium supplement can be taken at any time of day.

Magnesium oxide: Compared to other forms of magnesium, magnesium oxide is the least absorbable form and more likely to cause gastrointestinal side effects. Due to its laxative effect, it is often used to relieve constipation. It can be taken any time to support bowel movements.