L-carnitine is a modified amino acid that supports cellular energy production by assisting in the transport of fat into the mitochondria where it is oxidized and converted into atp (chemical energy for the cell). L-carnitine liquid is highly bioavailable which helps to maintain healthy cellular energy metabolism. L-carnitine is found primarily in red meats which means vegetarians may need to supplement it to ensure healthy levels in their bodies. San"s l-carnitine liquid is manufactured in a laboratory via synthesis and thus considered ideal for vegetarians due to the absence of any animal sources or by-products.