Benefits of Acetyl L Carnitine Simply Supplements Weight Loss Supplements for Athletes: What Works, What Doesn't, and What to Avoid I get asked so many questions about my pre workout combo, so here it is! I take Oxyshred + Acetyl L Carnitine. This combo gives me the energy I need to crush my workouts @oxyshred is that girl frrr. My go to combo of oxyshred and L carnitine has been making my journey on my cut way easier. Other factors do come into play but i take this supplement every single day