A Clinical Study of Dihydroergotine Mesylate Extended-release Tablets for the Treatment of Drooling in Parkinson's Disease.

Objective: To evaluate the efficacy and safety of dihydroergotine mesylate extended-release tablets for salivation in Parkinson\'s disease Study content: Using a randomized, double-blind, placebo-controlled study design, 120 patients with Parkinson\'s disease and cognitive impairment were enrolled, and the treatment was followed up for 12 weeks: dihydroergotine mesylate sustained-release tablets + conventional treatment (treatment group patients, 80 cases), placebo + conventional treatment (control group patients, 40 cases), and the main indicators were observed: the improvement effect of dihydroergotine mesylate sustained-release tablets on PD salivation was observed, and the secondary indicators were observed: the effect of dihydroergotine mesylate sustained-release tablets on the cognitive function of PD patients was observed. Expected results: The improvement effect of dihydroergotine mesylate sustained-release tablets on PD salivation was significantly different from that of the placebo control group. The dihydroergotine mesylate sustained-release tablet group had a significant effect on the cognitive function of PD patients.