Phenobarbital

**Definition:** A barbituric acid derivative that acts as a nonselective central nervous system depressant. It potentiates GAMMA-AMINOBUTYRIC ACID action on GABA-A RECEPTORS, and modulates chloride currents through receptor channels. It also inhibits glutamate induced depolarizations.

**Tree numbers:** - D03.383.742.698.253.650

**Synonyms:** - Phenemal - Phenobarbitone - Phenylethylbarbituric Acid - Phenylbarbital