barbiturate

noun

1. Any salt or ester of barbituric acid.
2. Any of derivatives of barbituric acid that act as depressants of the central nervous system and are used as sedatives or hypnotics.

   “Following the “Summer of Love” in 1967, amphetamines and barbiturates began to replace psychedelics as the dominant drugs used in the Haight-Ashbury district of San Francisco, and increasing numbers of individuals were treated at the Haight-Ashbury Free Medical Clinic for complications following barbiturate use.”

   “Chlorpromazine should be taken with caution in combination with barbiturates, sleeping pills, narcotics, or any other medication which may produce a depressive effect. Avoid alcohol.”

   “Seconal is the commercial name of the barbiturate quinalbarbitone. Its generic name is secobarbital. […] Dr Iqbal gave her another prescription for barbiturates and, three weeks later, wrote out one more after a telephone conversation.”