NCIt definition : A short-acting barbiturate derivative without hypnotic properties, Phetharbital (N-phenylbarbital)
can be used as a sedative and anticonvulsant agent due to its mechanism of enhancing
GABA (Gamma Amino Butyric Acid) transmission and inhibition of synaptic excitation.
Phetharbital has generally been withdrawn from clinical use. (NCI04);