Antianxiety drugs depress the central nervous system and suppress anxiety, sleepiness and relax muscles. They are also called downers or minor tranquilizers. When abused, many of these drugs can lead to unconsciousness and death. Sedatives include: barbiturates, benzodiazepines, carisoprodol, glutethimide, ketamine (Ketaset®), opioids, opium, and zopiclone. Talk about all antianxiety drugs on this forum.