In contrast, there is little evidence to date to suggest that supplemental L-carnitine could reduce muscle cramps in patients undergoing hemodialysis (128)
Sader, N
Some people use L-carnitine by mouth for muscle disorders associated with certain AIDS medications, difficulty fathering a child (male infertility), a brain development disorder called Rett syndrome, anorexia, body weakness and wasting due to an illness, weight loss, chronic fatigue syndrome and fatigue associated with multiple sclerosis, celiac disease, cancer, aging, diabetes, metabolic syndrome, overactive thyroid, attention deficit-hyperactivity disorder (ADHD), autism, leg ulcers, Lyme disease, a blood disorder called beta-thalassemia, loss of brain function due to liver damage, hepatitis C, non-alcoholic liver disease, memory, migraine headache, to improve athletic performance and endurance in healthy people and people with a lung condition called chronic obstructive pulmonary disease (COPD)
This deficiency is often triggered by heavy exercise, and can also manifest as a result of exposure to cold, infection, emotional distress, and/or fasting [132]
L-carnitine is an amino acid commonly made in the brain, kidneys, and liver
"Acetyl-L-carnitine for the treatment of diabetic peripheral neuropathy"