Creatine vs L Carnitine: Key Differences and Unique Benefits Momentous Olimp L Carnitine 1500 Extreme a diet supplement containing the concentrated dose of the purest pharmacology form of L Carnitine Tartrate of optimum micronisation level. Each capsule contains as Optimum Nutrition L Carnitine Shot Orange x 12 Creatine Supplements Powerful Support for Strength and Power Carnitine Supplement Review L Carnitine Optimum Nutrition Review Essentials, L Carnitine + Tartrate, 120 Capsules