Liquid L Carnitine 3500MG Boost Your Energy Naturally Ripped Up Nutrition 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 What Does L Carnitine Do In Pre Workout? What should I mix L Carnitine with? (L Carnitine) If you're putting in the work but the scale isn't moving, your body might just need a little help tapping into its fat stores. That's where L Carnitine comes in. It's not a