L Arginine vs. L Carnitine Come see which nutrient best fits your needs Spring Valley L Carnitine Amino Acid Dietary Supplement Tablets for Heart Health, 500 mg, 30 Count HSA FSA Eligible Walmart.com 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 Arginine Vs L Carnitine TikTok