We may earn compensation from the products and offers mentioned in this article. However, any expressed opinions are our own and aren’t influenced by compensation. To read our full disclosure, click here. What Is L-Carnitine Tartrate? L-carnitine tartrate is one of 5 L-carnitine formulations. It benefits people who are looking for a fast-acting version of carnitine....

By Corey Lewis, CPT, CSCS