Doctor's Best Acetyl L Carnitine, 1000 mg Per Serving, 120 Veggie Caps When Should You Take L Carnitine? MuscleTech GAT Liquid L Carnitine 16 oz Blue Raspberry When To Take L Carnitine to Maximise Your Shredding and Beyond BSc Supplements L carnitine usage ? when to take? On the pack it says empty stomach but i read everywhere it should be taken with meal (carbs) for insulin spike. Also does taking beta 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