Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get L Carnosine Tablets 500 mg Kal Vitamins Source Naturals GastricSoothe Zinc L Carnosine, 37.5 mg 120 Capsules Fry's Food Stores L Carnitine Linus Pauling Institute Oregon State University