Geneva, April 28 -- International Clinical Trials Registry received information related to the study (ChiCTR2600122558) titled 'A randomized crossover controlled study of prophylactic continuous and on-demand medication for primary dysmenorrhea' on April 15.
Study Type: Interventional study
Study Design:
Cross-over
Primary Sponsor: Peking University
Condition:
Primary dysmenorrhea
Intervention:
group 1:First menstrual cycle: Start taking medication 1-2 days before menstruation begins, one capsule every 8 hours, for 3 consecutive days.
Second menstrual cycle: Take medication immediately at the first sign of menstruation (before pain occurs), one capsule every 8 hours, for 3 consecutive days.
Third menstrual cycle: Take medication a...