Source Naturals Malic Acid, 883 mg, 60 TabletsSource Naturals Malic Acid, 883 mg, 60 Tablets, combines malic acid and magnesium to support muscle function, cardiovascular health, and energy production. Malic acid, a natural fruit acid, is present in most body cells and acts as an intermediate in the Krebs cycle, aiding in the metabolism of carbohydrates and fats. Magnesium is crucial for muscle relaxation and serves as an essential cofactor in over 300 enzymatic reactions, including those