folk medicine

noun2

1. •
   Traditional medical practices developed and used by non-physicians, typically involving customary homespun techniques and medicinal remedies derived from native plants.

   • Aromatherapy is a big business, and its roots run deep in folk medicine. — 2008
2. •
   A particular medicinal remedy used in such traditional medical practices.

   • A folk medicine traditionally used to treat depression is as effective as standard anti-depressant drugs and has fewer side-effects, according to a new study. — 1996