L Carnitine Before or After Workout Which Is Better for Fat Loss ? L Carnitine for Fat Burning: Boost Energy & Lose Weight Naturally Malook When to take L carnitine: Dosage, forms, and side effects L carnitine 15ML (25minutes before workout)Pre workout 25minutes before workout 1 recommended scoop .Step 1 : Add L carnitine supplements before workoutStep 2: Add cardio after workout 15 30 minutes Liquid L Carnitine 3000: Metabolism & Energy Support Cutler Nutrition The Right Way to Take L Carnitine to Boost Your Training