Nat Prod Commun. 2012 Feb;7(2):195-6.
A double-blind, randomized, clinical trial on the antileishmanial activity of a Morinda citrifolia (Noni) stem extract and its major constituents.
Sattar FA, Ahmed F, Ahmed N, Sattar SA, Malghani MA, Choudhary MI.

A topical ointment containing noni stem extract displayed good activity against cutaneous leishmaniasis. Of 40 patients, 50% had an excellent response and 30% exhibited good improvement. (original abstract available at https://www.ncbi.nlm.nih.gov/pubmed/22474954).