Acetyl L Carnitine Supplement (ALCAR) 500 mg Superior Labs Carnitine has a central role in fat metabolism. During the overnight fasted state and in exercise performed at low to moderate intensity, long chain fatty acids serve as the primary energy source for L Carnitine 1000mg Metabolism Booster, Energy Support & Muscle Build Inspire Health And Wellness Buy Life Extension Acetyl L Carnitine 500 mg 100 Vegan Capsules for Energy & Focus Buy Now with Express International Delivery GoSupps.com Life Extension L Carnitine 500 mg 30 Vegetarian Capsules Vitacost