The pharmacokinetics of pergolide in Parkinson's disease

Three decades of research have led to a fuller understanding of the pharmacokinetics of pergolide. Pergolide is rapidly absorbed following oral dosing, reaching peak plasma concentrations within 2-3 h. It is about 90% protein bound yet has negligible drug interactions. Pergolide undergoes extensive first-pass metabolism and is completely eliminated within 4-5 days. The metabolism/elimination profile varies between patients but is consistent within the individual, highlighting the importance of careful titration to an effective dose. Pergolide has a long half-life of about 21 h; this has interesting implications, as it should produce a more physiological or continuous stimulation of dopamine receptors, avoiding or delaying the induction of dyskinesia.