Ovaprene for Contraception
This study is looking at Ovaprene, a non-hormonal ring you place inside your vagina, to see how well it prevents pregnancy, if it's safe to use, and if people like using it. We are looking for women between 18 and 40 years old who are sexually active, at risk for pregnancy, and want to use contraception. The main goal is to see the pregnancy rate after 12 months of using Ovaprene. The study is currently recruiting participants, with a plan to enroll 656 people.
- Study design
- This is an open-label study, meaning you and the study team will know you are receiving Ovaprene. It is a single-arm study, so all participants will receive Ovaprene. Approximately 656 participants will be enrolled.
- What's involved
- Not specified in the trial record.
- Compensation
- Not stated in the trial record.
- Follow-up
- Your pregnancy rate will be measured at 12 months.
AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.
NCT06127199
Contraceptive Efficacy Study of Ovaprene
Recruiting
NAAges 18–40InterventionalPreventionDaré Bioscience, Inc.
~656 participants
Updated 2026-05-11 on ClinicalTrials.gov
What's tested:Ovaprene
At a glance
Recruiting sites
3 of 27 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Determination of pregnancy rate
Measured over 12 months
Conditions
Where it's being run
27 sites across 18 statesCalifornia5
Arizona3
New York2
Ohio2
Pennsylvania2
Colorado1
Georgia1
Hawaii1
Study leadership
- Christine Mauck, MD · STUDY_DIRECTOR · Daré Bioscience, Inc.
Who to contact
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Do you actually qualify for this trial?
Add a private profile and we'll compare every criterion below against your situation — and tell you which ones are met, uncertain, or excluding.
Eligibility criteria
Inclusion
Sexually active people assigned female at birth, at risk for pregnancy and desiring contraception.
General good health, by subject history and per investigator judgement
Age 18 through 40 years, inclusive; approximately 66 subjects \>35 years old at visit 2 will be the Enrolled-Eligible Population
In a relationship with a person assigned male at birth who meets eligibility criteria below.
At least 18 years old, not known to be subfertile or infertile
Have regular menstrual cycles (when not on hormonal contraception) with a usual length of 21 to 35 days, without heave bleeding that lasts longer than 5 days
Be willing to stop their current method of contraception (with the exception of condoms) before Visit 2. Participants must experience at least one subsequent menstrual bleed before inserting Ovaprene. Participants using injectable contraception must be at least 9 months post their last dose at screening and have experienced at least 2 subsequent regular menstrual bleeds that were part of cycles of 21-35 days. After stopping their current method of contraception, subjects must either abstain fro vaginal sex or use condoms before inserting their first Ovaprene
Not be actively desiring pregnancy for at least 13 months and be willing to accept an unknown risk of pregnancy
Expect to engage in at least 4 acts of heterosexual vaginal intercourse per cycle during the study.
Be willing to only use Ovaprene as the sole method of contraception over the course of the study
Agree not to participate in any other clinical trials during the course of the study
Be willing and able to comply with study procedures and to return to the clinic for scheduled follow-up visits
Microbiota/innate immunity and colposcopy subsets only:
Be willing to avoid vaginal sex and using tampons and other intravaginal products for 48 hours prior to clinic visits; and be willing to comply with subset procedures
Exclusion
Currently pregnant and/or have a positive urine pregnancy test at screening.
Have an allergy to the ingredients in Ovaprene
Have a history of toxic shock syndrome
Have a history of hereditary hemochromatosis
Be breastfeeding an infant
Have a history suggestive of infertility, defined as any of the following: known history of ectopic pregnancy or other fertility problem; sterilization/permanent contraception; endometriosis or hospitalization for pelvic inflammatory disease (PID) unless subject has had a subsequent spontaneous intrauterine pregnancy; or use of medications that could cause subfertility such as gonadotropin-releasing hormone agonists
Currently have postcoital bleeding
Have contraindications to pregnancy (medical condition) or chronic use of medications contraindicated in pregnancy
Have a history of clinically significant uterine prolapse, cystocele, or rectocele that has required surgical intervention or pessary use
Positive human immunodeficiency virus (HIV) test at screening
Have exclusionary results on human papilloma virus (HPV) screening/cytology (subjects\>/=21 years old) at screening or require treatment or follow-up for an abnormal Pap smear or HPV test that would be needed during the study.
Have had a vaginal or cervical biopsy within 1 month or vaginal surgery within the 3 months prior to screening
Known current drug or alcohol abuse which, in the opinion of the investigator, could impact study compliance
Have previously been included in the Enrolled-Eligible Population
Is a direct employee or immediate family member of the Sponsor company, site Investigators or study staff
Have taken any investigational drug or used any investigational device within the 30 days prior to screening
Have a history of any severe acute or chronic medical or psychiatric condition or laboratory abnormality that could increase the risk associated with trial participation or study treatment administration or could interfere with the interpretation of trial results
Microbiota/innate immunity subset only:
systemic use in the last 2 weeks prior to screening or anticipated use during the study of antibiotics (other than those used to treat urinary tract infection (UTI), candidiasis, or bacterial vaginosis(BV) diagnosed at Visit 1) or antivirals;
If male partner has or is suspected to have had an HIV infection or other sexually transmitted infection
if male partner has a known sensitivity or allergy to the ingredients in Ovaprene
If male partner has previously participated in this study or has taken any investigational drug or used any investigational device within 30 days prior to the female subject's screening
If the male partner has a history of any severe acute or chronic medical or psychiatric condition that could increase the risk associated with trial participation or could interfere with the interpretation of trial results.
What this trial measures
- Determination of pregnancy rate12 months
Measurement of number of pregnancies over 13 menstrual cycles (13-cycle Pearl Index)