The present invention provides for a diet supplement comprising creatine ethyl ester HCI 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. 5100 SPECTRUM WAY MISSISSAUGA ONTARIO L4W 5S2 Canada NEW CELL FORMULATIONS LTD 5090/CHENP/2007 A 5090/CHENP/2007 INDIA 2009-03-19T21:40:08Z 2008-05-30 2007-11-12 264396 2006-04-07 PCT/CA06/00574 A23L 1/30 WO 2006/108295 A1 HEUER, MARVIN, A 7502 7 14 0 64 U.S.A. 2005-04-11 60/670,424 2008-05-30 0 3B7O42XY 2009-04-30T18:30:52Z 14279 HEUER, MARVIN, A 25052 NEW CELL FORMULATIONS