Biomed Pharmacother. 2018 Nov;107:368-373.
Methanolic extract of Morinda citrifolia Linn. unripe fruit attenuates methamphetamine-induced conditioned place preferences in mice.
Pandy V, Wai YC, Amira Roslan NF, Sajat A, Abdulla Jallb AH, Vijeepallam K.

Noni fruit extract weakens addiction/reward behavior of mice addicted to methamphetamine. (original abstract available at https://www.ncbi.nlm.nih.gov/pubmed/30099340).