Citrulline 1000 100 Caps by Vitobest is formulated to help reduce the feeling of fatigue caused by lactic acid in the muscles during physical exercise. The main component is L-citrulline, a non-protein amino acid that promotes the synthesis of L-arginine. This process is essential for the production of nitric oxide, which transports nutrients and oxygen to the muscle tissue. Additionally, L-citrulline also helps remove toxic nitrogen derivatives from the body, increasing bicarbonate levels that neutralize lactic acid.