gnc l carnitine total lean L-Carnitine 3000 - Green Apple Transparent Labs: Natural Sports Nutrition

Not only does L-carnitine help the body burn fuel as efficiently and effectively as possible for increased energy, but it also improves athletic performance and endurance by inhibiting the build-up of lactic acid (one of the primary causes of fatigue during physical exercise)

R.PaitM

Short-chain fatty acids and ketones directly regulate sympathetic nervous system via G protein-coupled receptor 41 (GPR41)

doi: 10.1210/clinem/dgaa781

While there have been positive reports of carnitine supplementation and enhanced exercise performance and/or improved responses to exercise, there has been a general consensus to disregard the validity of those findings as the predominate opinion is that any performance enhancements must be predicated on increased resting muscle carnitine levels