Magnesium comes in several different forms, and the best choice depends on your individual needs rather than simply the amount listed on the label. Different forms are absorbed and tolerated differently, so choosing the right one can make a difference.

Magnesium glycinate is generally well tolerated and is often chosen by people looking for a supplement that may support relaxation and sleep. It is also considered relatively gentle on the stomach compared with some other forms.

Magnesium citrate is well absorbed and may be helpful for occasional constipation because of its effect on the digestive system. Other forms, including malate, taurate, chloride, and oxide, have different absorption characteristics and may be used for different purposes.

Most healthy people can get plenty of magnesium from foods such as nuts, seeds, beans, whole grains, and leafy green vegetables. Supplements should be used appropriately because taking excessive amounts can cause diarrhea, stomach discomfort, or other digestive problems. People with kidney disease should consult a healthcare professional before taking magnesium supplements.