L-Carnitine is an amino acid.

CARNICLE Tablets can be used in the treatment of the following conditions:

• Increasing red blood cell count in people with serious kidney disease.
• Preventing side effects caused by valproic acid, a seizure medication.
• Improving symptoms and complications of heart disease and heart failure. Taking L-carnitine by mouth seems to reduce the risk of death from myocarditis.
• Treating symptoms of high thyroid hormone levels.
• Treating male infertility caused by inflammation of some reproductive organs and tissues (prostate, seminal vesicles, and epididymis).
• Breast-feeding lowers body’s amount of carnitine. L-carnitine seems safe for most breast-feeding women when taken in the amounts recommended.
• Taking L-carnitine helps diabetics by increasing glucose oxidation, glucose storage, as well as glucose uptake.
• Eating disorders, fatigue, diabetes, high cholesterol, blood disorders, circulatory problems in the legs, leg ulcers, attention deficit-hyperactivity disorder (ADHD), Lyme disease, Rett syndrome, and other conditions.

Levocarnitine can be synthesised within the body from the amino acids lysine or methionine. Vitamin C (ascorbic acid) is essential to the synthesis of carnitine. Levocarnitine is a carrier molecule in the transport of long chain fatty acids across the inner mitochondrial membrane. It also exports acyl groups from subcellular organelles and from cells to urine before they accumulate to toxic concentrations. Only the L isomer of carnitine (sometimes called vitamin BT) affects lipid metabolism. Levocarnitine is handled by several proteins in different pathways including carnitine transporters, carnitine translocases, carnitine acetyltransferases and carnitine palmitoyltransferases.