Evid Based Complement Alternat Med. 2009 Sep;6(3):351-6.
Evaluation of the Wound-healing Activity of Ethanolic Extract of Morinda citrifolia L. Leaf.
Nayak BS, Sandiford S, Maxwell A.

Ingestion of the ethanol extract of noni leaves increased excision wound closure rates and promoted significantly greater levels of hydroxyproline in dead space wounds of Sprague Dawley rats.  The results demonstrate that noni leaf extract may promote wound healing. (view original abstract at https://www.ncbi.nlm.nih.gov/pubmed/18955257).