The present invention provides for a diet supplement comprising creatine ethyl ester HCl or derivatives thereof, creatine alpha-ketoglutarate, and alpha lipoic acid, wherein the supplemental dietary composition increases muscle size, strength, athletic performance and/or exercise capacity. Methods of using and producing the composition are also disclosed. The supplemental dietary composition may be suitable for persons seeking to increase muscle size and strength, and those seeking to improve athletic performance and exercise capacity.
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