What is "prodilidine"

n. An opioid analgesic, a ring-contracted analogue of prodine.

Prodilidine is an opioid analgesic which is a ring-contracted analogue of prodine. It has around the same analgesic efficacy as codeine, but is only around 1/3 the potency (100mg prodilidine is equivalent to 3mg oral morphine). It has little abuse potential.