GNC Pro Performance® L-Carnitine Supplement: L-Carnitine Is A Popular Amino Acid Among Bodybuilders, Weight Trainers And Serious Athletes Because Of Its Role In Facilitating The Metabolism Of Long Chain Fatty Acids. Pro Performance® L-Carnitine Provides 500 Mg Of This Important Nutrient Per Pill. Provides 500 Mg L-Carnitine Per Serving Facilitates Muscle Recovery Gluten Free | GNC Pro Performance L-Carnitine - 60 Tablets (60 Servings)