Magnesium Citrate - 90 caps 140 mg - from Energetic Nutrition

This macro mineral is a cofactor for over 300 enzymes in the body, and acts in concert with calcium to support cell, tissue, and organ functions. It is also a vital catalyst in the activity of those enzymes involved in energy production. It is needed for proper functioning of all muscles and has been shown to relieve spasms and pain. A deficiency of magnesium is believed to increase levels of "substance P", a chemical which has been implicated as a cause of increased pain levels.