How Many Different Types of Magnesium Supplements Are There?

Function & importance: Bound to the amino acid glycine, this form is highly absorbable and gentle on the stomach. It has a calming effect on the nervous system, making it the top choice for improving sleep quality, easing anxiety, and managing daily stress.

Function & importance: One of the most common and well-absorbed forms. It draws water into the intestines, acting as a gentle, effective laxative. It’s great for occasional constipation, though too much can cause loose stools.

Function & importance: A newer, specialised form that crosses the blood-brain barrier. It’s uniquely suited to support memory, focus, and overall cognitive function — a favourite for brain health.

Function & importance: Paired with malic acid, which plays a role in energy production. Often chosen for fatigue, muscle aches, and fibromyalgia. It’s well-absorbed and usually gentle on digestion.

Function & importance: Contains a high amount of elemental magnesium but is poorly absorbed. It’s mainly used as a laxative or for indigestion (think Milk of Magnesia). Inexpensive, but not ideal for correcting a deficiency.

Function & importance: Combined with the amino acid taurine, which supports cardiovascular function. Often recommended to help maintain healthy blood pressure and overall heart rhythm.

Function & importance: Better known as Epsom salt. Usually dissolved in a bath to soothe sore muscles. However, skin absorption is minimal, so it won’t fix a systemic magnesium deficiency.