Prazitone

Prazitone (AGN-511) is a barbiturate derivative developed in the 1970s. Unlike most barbiturates, it has little or no sedative effects, instead acting as a non-sedating anxiolytic and antidepressant. The dosage range in humans is around 200–600 mg, although higher doses have been used in trials for the treatment of depression associated with Parkinson's disease.