Mechanism of action of norgestrel 0.075 mg a progestogen-only pill. I. Effect on ovarian activity

Over-the-Counter Oral Contraceptives

This JAMA Insights discusses the first over-the-counter progestin-only oral contraceptive available in the US, including its effectiveness, mechanism of action, and accessibility.

Over-the-counter access to hormonal contraception: a global perspective

PURPOSE OF REVIEW

Oral contraceptive pills are among the most popular contraceptives worldwide, including among adolescents, and are available over the counter in over 100 countries. However, when a prescription is required, oral contraceptives may be difficult to obtain, particularly for adolescents. Recent approvals of over-the-counter progestin-only pills in the United Kingdom and United States have brought widespread attention to this topic.

RECENT FINDINGS

Progestin-only pills, including the norgestrel pill recently approved for over-the-counter use in the United States, are highly effective and may be used safely without a prescription or medical monitoring, including by adolescents. These pills are associated with relatively high user satisfaction. Although over-the-counter availability may improve contraceptive access overall, issues related to insurance coverage and out-of-pocket cost may continue to pose practical barriers to access for many individuals.

SUMMARY

Over-the-counter oral contraceptives are an appropriate and important contraceptive option for many adolescents. Over-the-counter availability has the potential to increase access to safe and effective contraception in the United States, United Kingdom, and other countries where a prescription is currently required. Future research on use patterns among adolescents is needed, as are advocacy efforts and policies to ensure access and affordability.

Hormonal Contraception and Sexual Function: A Review, Clinical Insights, and Management Considerations

Most sexually active women of reproductive age have used contraception, with hormonal methods constituting approximately 40% of contraceptive choices. Among these hormonal options, combined oral contraceptives stand out as the most selected. Within this same demographic, sexual issues are prevalent. Although specific hormonal contraceptives have been implicated in sexual dysfunction among these women, the correlation lacks consistency across studies and varies between different types of hormonal contraception. This article assesses the available literature on the associations between various hormonal contraceptive methods and sexual function and provides practical management insights.

Norgestrel (Opill) Is the First Over-the-Counter Oral Contraceptive Pill Approved in the United States

Just less than half of the pregnancies in the United States are unintended. Unintended pregnancy rates are greatest among women younger than 24 years, women of color, and those who have incomes less than 200% of the federal poverty level. Additionally, options to terminate a pregnancy are restricted or limited in some states. In July 2023, the U.S. Food and Drug Administration approved norgestrel (Opill) as the first over-the-counter oral contraceptive pill available in the United States. Norgestrel is indicated specifically for the prevention of pregnancy, contains only progesterone, and is indicated for daily oral use. This article provides an overview of over-the-counter norgestrel, including administration, adverse effects, contraindications, and practice implications for women's health nurses.

Opill: The Over-the-Counter Contraceptive Pill

The U.S. Food and Drug Administration has approved the first oral contraceptive pill (OCP) for over-the-counter status. This progestin-only pill contains norgestrel 0.075 mg taken daily, with a Pearl Index estimated at 4.4 (95% CI, 1.9-8.8). This formulation has an excellent safety profile, with current breast cancer as the only absolute contraindication and few relative contraindications. Ultimately, this approval has great potential to improve the accessibility of effective contraception for many pregnancy-capable Americans, especially those who have poor access to the health care system for prescription-required contraception, most notably people who hold marginalized identities. The pill's overall success in reducing rates of unintended pregnancy will rely on its availability, particularly in rural communities that may rely on one pharmacy, and affordability, especially for uninsured or underinsured individuals. However, given the need for improved contraceptive provision, particularly in abortion-restrictive settings, the over-the-counter approval of this daily OCP is a major advancement in the nation's contraceptive ecosystem.

Potential biomarkers to predict return to fertility after discontinuation of female contraceptives-looking to the future

Nowadays there are multiple types of contraceptive methods, from reversible to permanent, for those choosing to delay pregnancy. Misconceptions about contraception and infertility are a key factor for discontinuation or the uptake of family planning methods. Regaining fertility (the ability to conceive) after contraceptive discontinuation is therefore pivotal. Technical studies to date have evaluated return to fertility by assessing pregnancy as an outcome, with variable results, or return to ovulation as a surrogate measure by assessing hormone levels (such as progesterone, LH, FSH) with or without transvaginal ultrasound. In general, relying on time to pregnancy as an indicator of return to fertility following contraceptive method discontinuation can be problematic due to variable factors independent of contraceptive effects on fertility, hormone clearance, and fertility recovery. Since the ability to conceive after contraceptive method discontinuation is a critical factor influencing product uptake, it is important to have robust biomarkers that easily and accurately predict the timing of fertility return following contraception and isolate that recovery from extrinsic and circumstantial factors. The main aim of this review is to summarize the current approaches, existing knowledge, and gaps in methods of evaluating return-to-fertility as well as to provide insights into the potential of new biomarkers to more accurately predict fertility restoration after contraceptive discontinuation. Biomarker candidates proposed in this document include those associated with folliculogenesis, cumulus cell expansion, follicular rupture and ovulation, and endometrial transport and receptivity which have been selected and scored on predefined criteria meant to evaluate their probable viability for advancement. The review also describes limitations, regulatory requirements, and a potential path to clinically testing these selected biomarkers. It is important to understand fertility restoration after contraceptive method discontinuation to provide users and health providers with accurate evidence-based information. Predictive biomarkers, if easy and low-cost, have the potential to enable robust evaluation of RTF, and provide potential users the information they desire when selecting a contraceptive method. This could lead to expanded uptake and continuation of modern contraception and inform the development of new contraceptive methods to widen user's family planning choices.

The effect of deliberate non-adherence to a norgestrel progestin-only pill: A randomized, crossover study

OBJECTIVES

To estimate the effects on cervical mucus, ovarian activity and theoretical contraceptive protection of a 6-hour delay and of missing one norgestrel 0.075 mg progestogen-only pill.

STUDY DESIGN

In a prospective, two-site, randomized, crossover study, healthy women aged 18 to 35 with BMI <32.0 kg/m² and regular ovulatory cycles completed a baseline 28-day cycle with correct daily pill use followed by two intervention cycles in which, around mid-cycle, one pill was taken 6 hours late or missed completely. We undertook ovarian ultrasonography, estradiol and progesterone measurement, and cervical mucus assessments every 3 to 4 days (daily around the time of the incorrect use) and based the theoretical contraceptive protection score on ovarian activity status, cervical mucus and their temporal relationship.

RESULTS

Of 91 potential participants screened, 52 started the study and 46 provided complete data for each intervention cycle. Fourteen participants (30%) ovulated in each of the two intervention cycles, with four during the delayed pill cycle and two during the missed pill cycle having an abnormal luteal phase. Seven participants in the delayed pill cycle, and six with a missed pill had elevated cervical mucus scores temporally associated with the intervention. However only two women, one in the delayed pill cycle and one in the missed pill cycle, had cervical mucus scores in the range considered favorable for fertility.

CONCLUSIONS

Delayed or missed intake of a single norgestrel 0.075 mg progestogen-only pill appears to have little effect on theoretical contraceptive efficacy.

IMPLICATIONS

This biomedical study suggests that taking a norgestrel 0.075mg progestogen-only pill 6 hours late or missing one pill have little effect on ovarian activity or cervical mucus and may not jeopardize contraceptive efficacy. Correlation with typical use outcomes is necessary to confirm pregnancy risk with delayed or missed norgestrel intake.