Answer: opioids

AnswerCrossword Clue
OPIOIDSSedatives
OPIOIDSSome pain relievers
opioidsany of several synthetic compounds, as methadone, having effects similar to natural opium alkaloids and their derivatives
opioidsOPIOID, a peptide that acts like opium
opioidsany of a group of natural substances, as the endorphins, produced by the body in increased amounts in response to stress and pain
opioidsany opiumlike substance
opioidspertaining to such a substance