[Clinical study of pergolide in Parkinson's disease].

Pergolide is thought to stimulate both D1 and D2 dopaminergic receptors. Its effects on Parkinson's disease were evaluated in an open trial, using clinical assessment scales and objective tests. Nine patients had previously been treated with L-dopa, but the drug had either gradually lost its effectiveness or produced invalidating side-effects. Pergolide in doses of 2 mg per day considerably and durably improved the parkinsonian symptoms and enabled the patients to reduce L-dopa dosage by about 50%. Dyskinesia and "on-off" phenomena partially regressed. Significant improvement was also observed in 3 of 4 patients with Parkinson's disease who had not previously received L-dopa. The side-effects of pergolide were fairly frequent in both groups, but they were relatively mild and reversible.