Does L Carnitine Work for Fat Loss? A Dietitian Explains L Carnitine is not a magic fat burner It won't melt fat, build muscle, or replace hard work. The only thing it burns is your money Stick to the basics Acetyl L Carnitine Superior Supplement Products Science First Designs for Health PCOS Nutrition Center L Carnitine (120 Capsules) PCOS Nutrition Center 100% Acetyl L Carnitine Powder MYPROTEIN L carnitine supplementation for the management of fatigue in patients with hypothyroidism on levothyroxine treatment: a randomized, double blind, placebo controlled trial. Semantic Scholar