I was recently asked by a patient what the difference was between the Malate and Glycinate versions of Magnesium (Mg). This is a fairly common question so I thought I would address it in a blog. When determining what type of Mg you supplement with, consider the following: The malate form is derived from malic acid, which plays a key role in energy production. This type of Mg will benefit athletes who are very active, sweat a lot, and require maximal energy production. There is also evidence that this form of Mg is best used for musculoskeletal issues such as fibromyalgia. Magnesium glycinate is the form of Mg that is best used for individuals malabsorption or gut issues, such as Crohn's or Celiac disease. The glycinate form of Mg tends to be less disruptive on the bowels. This form of the mineral also tends to work more favorably with older individuals who are prone to Mg deficiency. An easy way for you to remember the type you need: Gut begins with G, so glycinate; Muscle begins with M , so malate.