health canada acetyl l carnitine monograph L-Carnitine Tartrate Acetyl L Carnitine | Dietary
Description
481 Total carnitine concentration includes both free and bound (ie, acylated) carnitine, which reflects levels in both serum and tissues, such as muscle, liver, and kidney

If your plan is to use this supplement to optimize energy during your workout, its best to take it prior to working out

2013;157(24):A5944

Best Pract Res Clin Endocrinol Metab 35 (4): 101522, 2021
