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Magnesium: every form, compared

How the forms of magnesium differ, and how much to take.

apiece offers 6 forms of magnesium. Each is listed with the amount a formula usually includes.

• Magnesium malate

  Magnesium malate pairs magnesium with malic acid to support energy production and muscle function. Usual amount: 350 mg.

• Magnesium citrate

  Magnesium citrate supports muscle and nerve function, healthy energy levels and regularity. Usual amount: 350 mg.

• Magnesium L-threonate

  Magnesium L-threonate is a form of magnesium that supports memory, learning and restful sleep. Usual amount: 144 mg.

• Magnesium oxide

  Magnesium oxide is a concentrated source of magnesium that supports muscle and nerve function. Usual amount: 350 mg.

• Magnesium taurinate

  Magnesium taurinate pairs magnesium with taurine to support heart health and a calm nervous system. Usual amount: 350 mg.

• Magnesium bisglycinate, buffered

  Magnesium bisglycinate is a gentle form of magnesium that supports relaxation, sleep and muscle function. Usual amount: 350 mg.

Questions

Which form of magnesium is best?

It depends on what you want it for and how your body handles it. The forms differ in how much magnesium they carry, how they feel on the stomach and how much capsule space they take. apiece uses magnesium bisglycinate, buffered by default and lets you choose another form.

How much magnesium is too much?

The adult upper limit is 350 mg a day from supplements (food not counted). Count every source, including multivitamins.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This page is general information, not medical advice. Check with your doctor or pharmacist before starting a supplement, especially if you take medication, are pregnant or nursing, or have a health condition. Updated 2026-10-21.