l carnitine testosterone study Frontiers Research Science Update -- L-Carnitine
Description
Some research suggests that CoQ10 and L-carnitine may improve sperm parameters, including motility and concentration, potentially due to their roles in energy production and antioxidant protection

Deficiency of any of these enzymes can cause symptoms similar to those encountered in disorders of the carnitine cycle

A human clinical study published in PLOS ONE found that oral supplementation with L

It also supports muscle movement