L Carnitine helps convert fat into usable energy, making it ideal before workouts or active days. Combined with ACV for added metabolism support. . . . . . . . . . #WorkoutFuel #LCarnitine #FitnessSupport #Vitallfizz L Carnitine liquid 3000. Converts fat to energy. Burn more calories and increase energy. Take 30 mins before a workout. #lcarnitine #jaycutler #tiktok #gymmotivation Frontiers A machine learning approach for predicting the effect of carnitine supplementation on body weight in patients with polycystic ovary syndrome 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.