Hydroxyzine, sold under the brand names Atarax among others, is a medication of the antihistamine type. It is used in the treatment of itchiness, anxiety, and nausea. Compare risks and benefits of common medications used for Sedation. Find the most popular drugs, view ratings, user reviews, and more DESCRIPTION. Ultrashortacting highly lipophilic barbiturate; faster onset of action and recovery time vs thiopental and twice as potent; used alone as an anesthetic. or barbituates are in the same classification as benzodiazepines (Valium, Librium and more) and act as depressants on the central nervous. Learn about the potential side effects of phenobarbital. Includes common and rare side effects information for consumers and healthcare professionals. Warde Medical Laboratory, a regional reference laboratory offering stateoftheart esoteric testing for health care providers. MNU ABSN Learn with flashcards, games, and more for free. A barbiturate is a drug that acts as a central nervous system depressant, and can therefore produce a wide spectrum of effects, from mild sedation to death. PDR Drug Summaries are concise pointofcare prescribing, dosing and administering information to help phsyicans more efficiently and accurately prescribe in their. Initial, 400 to 600 mg orally once daily or divided twice daily; maintenance, when a good response is obtained, dosage may be reduced 50 to 200.