Is creatine supplementation safe for renal (kidney) function? L Carnitine: Benefits, Uses, Side Effects, and More Govinda Lifecare The effects of L carnitine on renal function and gene expression of caspase 9 and Bcl 2 in monosodium glutamateinduced rats BMC Nephrology Springer Nature Link Can L Carnitine Fumarate Support Energy Levels for Long COVID and ME CFS Patients? RTHM If you are like a lot of people, you may have never heard of carnitine but this important nutrient is critical for our body's ability to optimally burn fat required for energy.