Safety Study of Ethinylestradiol/Drospirenone in Dysmenorrhea
A Multicenter, Single-blind, Randomized Study, to Investigate Efficacy of Ethinylestradiol for Intracyclic Bleeding Profile During 24 Weeks (6 Cycles) by Oral Administration of Drospirenone 3 mg/Ethinylestradiol 20 µg and Drospirenone 3 mg/ Ethinylestradiol 30 µg in Patients With Dysmenorrheal and to Investigate the Long Term Safety Oral Administration of Drospirenone 3 mg/Ethinylestradiol 20 µg Administered for 52 Weeks (13 Cycles)
Sponsor: Bayer
A PHASE2/PHASE3 clinical study on Dysmenorrhea, this trial is completed. The trial is conducted by Bayer and has accumulated 6 data snapshots since 2007. Longitudinal tracking of this trial contributes to a broader understanding of treatment development timelines.
Status Flow
Change History
6 versions recorded-
Sep 2025 — Present [monthly]
Completed PHASE2/PHASE3
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Sep 2024 — Sep 2025 [monthly]
Completed PHASE2/PHASE3
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Jul 2024 — Sep 2024 [monthly]
Completed PHASE2/PHASE3
Phase: PHASE2_PHASE3 → PHASE2/PHASE3
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Jan 2021 — Jul 2024 [monthly]
Completed PHASE2_PHASE3
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Jun 2018 — Jan 2021 [monthly]
Completed PHASE2_PHASE3
▶ Show 1 earlier version
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Jan 2017 — Jun 2018 [monthly]
Completed PHASE2_PHASE3
First recorded
Feb 2007
Trial started
Per CT.gov start date — pre-dates our first snapshot
Eligibility Summary
No eligibility information available.
Contact Information
- Bayer
For direct contact, visit the study record on ClinicalTrials.gov .
Study Locations
Chuo-ku, Japan , Hachiōji, Japan , Kobe, Japan , Machida, Japan , Maebashi, Japan , Musashino, Japan , Nagoya, Japan , Nishinomiya, Japan , Osaka, Japan , Sendai, Japan and 10 more locations