K Mag KG is a combination of the essential minerals potassium and magnesium with alpha ketoglutaric acid AKG . Potassium, magnesium, and AKG all have important roles in the Krebs cycle, the body s main energy production system. Potassium is important for muscle strength and glycogen formation, while magnesium helps store body energy as magnesium ATP adenosine triphosphate, the body s chief energy mollecule . AKG combines with the harmful ammonia generated by intense muscle activity to create glutamine, an important energy fuel.