Pill schedule showdown: does taking birth control continuously tame PCOS better?
NCT ID NCT03819140
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at whether taking birth control pills every day for 6 months (continuous) works better than the usual 3-weeks-on, 1-week-off schedule for women with Polycystic Ovary Syndrome (PCOS). The goal was to see which approach lowers testosterone levels and improves symptoms like excess hair growth and acne. 51 women aged 16-35 with PCOS took part, and researchers measured hormone levels and skin changes over 6 months.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 4
Runs after approval, following long-term safety and how well the treatment works in everyday use.
- Participants
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51 people
The number who actually took part.
- Started
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Apr 2019
- Finished
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Oct 2022
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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15 to 40 years
- Sex
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Female participants only
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: To be included in this study, participants must be: 1. Female, within 15-40 years of age 2. Diagnosed with Polycystic Ovary Syndrome based on the 2003 Rotterdam Criteria (must meet 2 out of 3 criteria): 1. evidence of either biochemical or clinical hyperandrogenism (elevated free and or total testosterone level above the normal reference range for assay, and/or an modified Ferriman-Gallwey hirsutism score \>8) 2. Oligo- or anovulation 3. Polycystic ovary morphology on ultrasound 3. Adolescents should be at least 2 years out from menarche (first menstrual period). 4. Participants must not be on an oral contraceptive pill (OCP) at the start of the study and or Spironolactone therapy (an anti-androgen medication), but recommended by their physician to start OCP therapy. Exclusion Criteria: 1. Females with Polycystic Ovary Syndrome (PCOS) who do not have either biochemical (elevated total or free testosterone levels) or clinical (modified Ferriman-Gallwey hirsutism score \<8) findings of hyperandrogenism will not be included in the study as this is one of the primary outcome measures. 2. Females with PCOS who are already on and currently using a form of contraceptive (oral, vaginal ring, or patch) 3. Females that are concurrently using or plan to use an anti-androgenic medication such as Spironolactone in the next 6 months. 4. Females currently or are planning to obtain permanent hair removal (ex. laser hair removal, electrolysis) in the concurrent 6 months of starting oral contraceptive (OCP) therapy will also be excluded from the study 5. Women who are pregnant or have contraindications for starting an OCP, including active smokers, history of clotting disorders, history of deep vein thrombosis or blood clots, neoplasia, vascular disease, migraines, hypertension, or have renal/hepatic disease will be excluded from the study as OCP therapy would not be indicated or approved in this population. 6. Females with elevated potassium levels above the normal reference range for age.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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University of California, San Francisco
San Francisco, California, 94158, United States
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Other studies related to the condition(s) this trial covers.
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