Journal of Medicinal Plant Research 2(7):154-158.
Morinda citrifolia L. (noni) improves athlete endurance: Its mechanisms of action.
Palu AK, Seifulla RD, West BJ.

In a placebo-controlled clinical trial involving highly-trained athletes, drinking 100
mL of TNJ twice daily increased endurance (time-to-fatigue) by 21%, and improved antioxidant status, as
measured by a 25% decrease in blood chemiluminescence. Chemical analyses by multiple laboratories
and drug-urine screening of human volunteers reveal that TNJ does not contain any illegal drugs or
substances prohibited by the World Anti-doping Agency. (original article available at