(băr-bĭt′ū-rāts)
[Pronunciation]
(băr-bĭ-tū′rāts)

A group of organic compounds derived from barbituric acid (e.g., amobarbital, phenobarbital, secobarbital) that are used to treat and prevent convulsions, relieve anxiety, or aid sleep.
Side effects include drowsiness, depressed respirations, decreased blood pressure, and decreased body temperature. These drugs can also cause tolerance and dependence.

See: Poisons and Poisoning Appendix