DCHP-1 Online
strong medicine 
something believed to have power over the forces of nature; magic or supernatural powers believed to have the means of healing or harming.
See also: medicine
- 1942 And the testing of the braves! That had been strong medicine.
- 1944 These strange [medicine] men have nearly altogether died off, and I know of none of them now living who used to make what they called 'strong medicine" in the late seventies.
- 1942 And the testing of the braves! That had been strong medicine.