Citrulline malate is a combination of an amino acid (citrulline) and an organic salt (malate) which is a tricarboxylic acid cycle intermediate. Its noted effects include an increase in lactate metabolism and an antiasthenic effect (63). A major effect is an increase in aerobic capacity during exercise and greater recovery after exercise; this is due to the rate of muscle oxidative ATP production during exercise and the rate of PCr recovery after exercise (63).
63 – Bendahan, D., Mattei, J. P., Ghattas, B., Confort-Gouny, S., Le Guern, M. E., & Cozzone, P. J. (2002). Citrulline/malate promotes aerobic energy production in human exercising muscle. British journal of sports medicine, 36(4), 282-289.