L carnitine, creatine and whey protein effective for strength training Creatine monohydrate and L carnitine are two of the most researched supplements in the game., We are talking years. Decades. Proven over and over again., Creatine is your foundation., More strength. L Carnitine vs Pre Workout: Which Supplement Should You Take? L Carnitine VS Creatine What's the Difference? Carnitine, Carnosine & Creatine OH MY! Dr Michael Greger of Nutritionfacts.org