The Ultimate Guide to Supplements You Should Take on an Empty Stomach WhyNotNatural 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 NutraKey Health Acetyl L Carnitine Doctor's Best Acetyl L Carnitine, 500 mg, 60 Veggie Caps Turn fat into fuel with our L Carnicut As a dietary supplement, one tablespoon (15 ml) of L Carnicut can be taken up to 2 times daily, preferably on an empty stomach. Acetyl L Carnitine 1000mg Brain, Energy, Metabolism Support Purecell Supplements