"Quick-starting" of a Quadriphasic Contraceptive Pills, 1 - 3 mg Estradiol Valerate/ 2 - 3 mg Dienogest VS 20 mcg Ethinylestradiol/75 mcg Gestodene Focusing on Ovulation Inhibition
Summary
The goal of this clinical trial is to learn if Estetrol/Drospirenone inhibit ovulation in quick-starting method. It will also learn about the safety of Estetrol/Drospirenone. The main questions it aims to answer are: Does Estradiol valerate/Dienogest inhibit ovulation inferior to Ethinyl estradiol/Gestodene when starting on Day 7-9 of menstrual cycle? What are the impacts of Estradiol valerate/Dienogest on ovarian activities when starting on Day 7-9 of menstrual cycle? How does the cervical mucus change when starting Estradiol valerate/Dienogest on Day 7-9 of menstrual cycle? What are the adverse effects when starting Estradiol valerate/Dienogest on Day 7-9 of menstrual cycle? Researchers will compare Estradiol valerate/Dienogest to Ethinyl estradiol/Gestodene to see if Estradiol valerate/Dienogest inhibit ovulation in quick-starting method.
Timeline
- Start
- 2024-05-01
- Primary completion
- 2024-10-31
- Completion
- 2024-10-31
Drugs
| Evaluation | Drug | Modality | Dose | Route |
|---|---|---|---|---|
| Subject | Dienogest | Small molecule | 2 mg | Oral |
| Subject | Dienogest | Small molecule | 3 mg | Oral |
| Comparator | Gestodene | Small molecule | 75 ug | Oral |
| Subject | estradiol valerate | Unknown | 1 mg | Oral |
| Subject | estradiol valerate | Unknown | 3 mg | Oral |
| Comparator | ethinyl estradiol | Small molecule | 20 ug | Oral |