Yamamoto Nutrition PureMINERAL + SUSTAMINE is a magnesium-and-potassium food supplement that provides L-alanyl L-Glutamine (Sustamine).Mum agnesicombats fatigue and maintains electrolyte balance, metabolism, and protein synthesis.And potassium contributes to muscle function and maintaining normal blood pressure.When we exercise, we sweat and lose massive amounts of water. Losing just 20% of our body's water stores can reduce our athletic performance by up to 50%! So we must drink more water.However, most of us don't realize that extra minerals, electrolytes, and phosphates are essential for proper hydration.PureMINERAL + SUSTAMINE contains the electrolytes needed for proper hydration and will help reduce the chance of cramping and ensure proper hydration for even the most intense competitions!Sustamine adds alanyl-glutamine to an oral rehydration solution or beverages to increase the absorption of water and electrolytes at the cellular level.Simply put, the ultimate product is here. No hype, no nonsense. Just clinical doses of scientifically recommended ingredients.