Creatine Vs Carnitine Which Pre workout Supplement To Choose? AS IT IS Nutrition Creatine VS L Carnitine Creatine vs Carnitine Effects for Athletes FWDfuel Sports Nutrition This combo is. L Carnitine helps your body use fat as fuel Creatine fuels strength, power, and performance A stronger, more efficient body! Educational purposes only. Not medical advice. Christine L carnitine, creatine and whey protein effective for strength training