120
Participants
Start Date
October 1, 2023
Primary Completion Date
June 30, 2024
Study Completion Date
December 30, 2024
Placebo
placebo + usual care, placebo 5 mg daily; 2.5mg 2 times daily, after breakfast and dinner.
dihydroergotine mesylate sustained-release tablets
Dihydroergotine mesylate extended-release tablets + conventional treatment, dihydroergotine mesylate sustained-release tablets 5mg daily; 2.5mg 2 times daily, after breakfast and dinner.
The Second Arilliated Hospital of Soochow University, Suzhou
Second Affiliated Hospital of Soochow University
OTHER