The invention provides a method to produce a stable, ionic-bonded, dry creatine-α-ketoglutarate product at a molar ratio of about 2:1. The product is stable at room temperature when kept dry for periods of up to one year. The product can be supplemented with additional biologically active, natural amino acid, preferably l-arginine, l-taurine and l-citrulline. The serving dosage is typically between about 1 and 2 g.