l carnitine injection vs liquid Injectable Oral L-Carnitine: Which Works Better? Benefits of Using L carnitine
Description
However, in this case, the body is unable to handle very long-chain fatty acids (VLCFA)
Alterations of the thalamo-cortical system in rats prenatally exposed to ethanol are prevented by concurrent administration of acetyl-L-carnitine Brain Res 1995

Although it's formed in these organs, it's stored primarily in muscle (including the heart) as well as the brain and even in sperm
L-carnitine enhances axonal plasticity and improves white-matter lesions after chronic hypoperfusion in rat brain
