Acetyl L Carnitine, 500 mg, 100 Vegetable Capsules 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. Protocol For Life Balance Acetyl L Carnitine 500 mg Helps Transport Fatty Acids, Reduce Unwanted Fat, Boosts Energy, Cognitive Brain Support, l Carnitine and Acetyl l carnitine Roles and Neuroprotection in Developing Brain Neurochemical Research Springer Nature Link Ronnie Coleman L Carnitine XS 3000 473 ml Supplemart L Carnitine L Tartrate: 8 Key Benefits Dr. Lam