Wiktionary
piribedil
n. An antiparkinsonian drug derived from piperazine.
Wikipedia
Piribedil
Piribedil (trade names Pronoran, Trivastal Retard, Trastal, Trivastan, Clarium and others) is an antiparkinsonian agent and piperazine derivative which acts as a D and D receptor agonist. It also has α-adrenergic antagonist properties.