L Carnitine Supplements (100 Capsules) Health Hispanica Health Hispanica PCOS Nutrition Center L Carnitine Subscription (120 Capsules) PCOS Nutrition Center L Carnitine: Benefits, Side Effects, And Dosage, Per Dietitians 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. Top 5 Benefits of CoQ10 and L Carnitine Combination for Athletes iThrive Essentials Acetyl L Carnitine: Boost Focus & Cellular Energy Pro Hormones