l carnitine s r forms L-Carnitine and acetyl-L-carnitine roles and neuroprotection in developing brain L-Carnitine ((R)-Carnitine) | Co-factor for
Description
There are different forms of L-Carnitine, each with specific benefits

However, it's also suggested that taking a combination of whey (or better yet free-form essential amino acids...read on!) and casein after a workout can help with muscle protein synthesis better than taking either one of them alone

10.1021/acsmedchemlett.6b00056 123 ZhangL

Thermodynamic and kinetic examination of protein stabilization by glycerol

Journal of the International Society of Sports Nutrition, 14
