A tranquilizer is a type of medication that helps calm and relax a person or an animal, often used to reduce anxiety or allow them to sleep. Full definition
Swiftly approaching the briefly stunned driver and his copilot, we unloaded a couple of tranquiliser darts into them, slung the freed prisoner over the back of D - Horse and rode him to the rhythmic sound of the rescue chopper. (gamestm.co.uk)
For severe anxiety, your vet may prescribe tranquilisers like Clomicalm. (dogobedienceadvice.com)
Similarly an accusation of deliberate murder by poisoning by a care home was revealed to have been likely to have naturally arisen as a result of a pharmacogenetic cause resulting in the victim being unable to excrete the prescribed tranquiliser in question. (lawyer-monthly.com)