tranquilizer

https://doi.org/10.1351/goldbook.12144
Drug that calms and pacifies with minimal sedating or depressant effects.
Notes:
  1. A tranquilizer decreases anxiety (i.e., has anxiolytic properties) or agitation without necessarily decreasing awareness or wakefulness. Tranquilizers at higher dose may induce sleep.
  2. Minor tranquilizers are sedatives, examples of which include benzodiazepines, antihistamines, alcohol, cannabis, and chloral hydrate. Major tranquilizers include antipsychotic drugs and neuroleptics.
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 913 [Terms] [Paper]