Effectiveness varies: L carnitine may help with fat metabolism, but it's not a magic weight loss pilldiet and exercise still matter most. Forms matter: Regular L carnitine general use Acetyl L carnitine brain & energy The bright and the dark sides of L carnitine supplementation: a systematic review Journal of the International Society of Sports Nutrition Springer Nature Link Not all L Carnitine is created equal. CarniBlast delivers clean, high quality Carnipure L Carnitine in delicious flavors your routine will actually look forward to. Support natural energy production, exercise performance, and fat metabolism with L Carnitine 5000 EC Sports Supplements AS IT IS Nutrition L Carnitine Capsules L Carnitine Tartrate 2000mg Powder Pre & Post Workout Supplement Carbamide Forte