SEDATIVE MEDICATION - A medication with tranquilizing properties. Most sedatives (tranquilizers) can also promote sleep. Overdosage of a sedative medication can lead to dangerous respiratory depression (slowed breathing). A large group of medications with sedative effects are the benzodiazepines. Examples include: diazepam, chlordiazepoxide, alprazolam, clonazepam, temazepam, lorazepam, flurazepam, oxazepam, clorazepate, and triazolam.