The adverse effects of long term l carnitine supplementation on liver and kidney function in rats L Liu, D M Zhang, M X Wang, C Y Fan, F Zhou, S J Wang, L D Kong, 2015 Can L Carnitine Support Energy Levels and Exercise Recovery for Long COVID and ME CFS Patients? RTHM Ever heard of L Carnitine? , It helps your body turn fat into energy, boosts endurance, and speeds up recovery. , You can find it in liquid or capsules (I prefer liquid 1100mg or 3000mg)., If The bright and the dark sides of L carnitine supplementation: a systematic review Journal of the International Society of Sports Nutrition Springer Nature Link