The Role of L Carnitine in Kidney Disease and Related Metabolic Dysfunctions L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe L carnitine is a naturally occurring amino acid structure that is made in the human brain, liver, and kidneys. L carnitine plays a critical role in energy production, as it converts fat into energy. Comida Para Perros Josera Saco De Ave De Corral Y Trucha, Sin Cereales, Con L carnitina, Para Perros Activos Pienso Para Perros Sensibles Con Piel Sana Healthvit Acetyl L Carnitine (ALCAR) Capsules