When to take L carnitine: Dosage, forms, and side effects Taking a preworkout AND carnitine? It is important to get the timing of each supplement right to get the best results with both. Watch as Phil explains the best way to combine them. , #preworkout Can We Take L Carnitine and Creatine Together? Prorganiq How to Take L Carnitine Correctly to Boost Your Training Bodybuilding.com L Carnitine Force Factor This combo is. L Carnitine helps your body use fat as fuel Creatine fuels strength, power, and performance A stronger, more efficient body! Educational purposes only. Not medical advice. Christine