kutema mphini. Umboni wamakono wa sayansi umasonyeza kuti kutema mphini sikothandiza kwambiri kuposa placebo pothandiza kuchotsa cocaine. Mawu awa akuchokera pa maphunziro anayi osasinthika, oyendetsedwa ndi placebo omwe adasindikizidwa pakati pa 1999 ndi 2002.5-8 . Mmodzi mwa maphunzirowa adakhudza akuluakulu 620 omwe amamwa mankhwala osokoneza bongo5. Malinga ndi kafukufuku wathu, chithandizo chamankhwala chinawonedwa pokhapokha pa kafukufuku wina, womwe unakhudza anthu 82 odalira.9.