Amazon.com: NOW Sports Nutrition, L Carnitine Liquid, Triple Strength 3000 mg, Citrus, 16 Ounce : Health & Household When Should You Take L Carnitine? MuscleTech Tip: It Works Better on an Empty Stomach, L Carnitine absorbs better when insulin is lower., Thats why a lot of people take it: , First thing in the morning, Before movement Better result drinking the L Carnitine & Collagen Shots on a EMPTY STOMACH , im going to still make my Morning Glow every morning , #foryou, #foryoupage