Creatine vs L Carnitine: Which Supplement Fits Your Goals? Liquid Gold: 5 Benefits of Liquid Carnitine You Can't Ignore NutraBio Brands Amazon.com: Life Extension Creatine Acetyl L Carnitine Energy Plus, Energy Support Supplement, creatine monohydrate, Acetyl L carnitine, Gluten Free, Non GMO, Vegetarian, 30 Servings : Health & Household 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 When to take L carnitine: Dosage, forms, and side effects