Clinical experience with the progestogen-only pill

Norethindrone dosing for adequate menstrual suppression in adolescents

OBJECTIVES

We sought to study factors predictive of achieving menstrual suppression with norethindrone vs. norethindrone acetate in adolescents, as optimal dosing is unknown. Secondary outcomes included analyzing prescriber practices and patient satisfaction.

METHODS

We performed a retrospective chart review of adolescents ages <18 years presenting to an academic medical center from 2010 to 2022. Data collected included demographics, menstrual history, and norethindrone and norethindrone acetate use. Follow-up was measured at one, three, and 12 months. Main outcome measures were starting norethindrone 0.35 mg, continuing norethindrone 0.35 mg, achieving menstrual suppression, and patient satisfaction. Analysis included Chi-square and multivariate logistic regression.

RESULTS

Of 262 adolescents initiating norethindrone or norethindrone acetate, 219 completed ≥1 follow-up. Providers less often started norethindrone 0.35 mg for patients with body mass index ≥25 kg/m2, prolonged bleeding, or younger age at menarche, but more often for patients who were younger, had migraines with aura, or were at risk of venous thromboembolism. Those with prolonged bleeding or older age at menarche were less likely to continue norethindrone 0.35 mg. Obesity, heavy menstrual bleeding, and younger age were negatively associated with achieving menstrual suppression. Patients with disabilities reported greater satisfaction.

CONCLUSIONS

While younger patients more often received norethindrone 0.35 mg vs. norethindrone acetate, they were less likely to achieve menstrual suppression. Patients with obesity or heavy menstrual bleeding may achieve suppression with higher doses of norethindrone acetate. These results reveal opportunities to improve norethindrone and norethindrone acetate prescribing practices for adolescent menstrual suppression.

Effectiveness and efficacy rates of progestin-only pills: A comprehensive literature review

OBJECTIVES

To synthesize published literature on POP effectiveness and efficacy.

STUDY DESIGN

We searched PubMed Central, PubMed, and the Cochrane library through March 07, 2022. We included articles written in English reporting a Pearl Index or life table rate for pregnancy. We excluded articles only assessing formulations that: were never marketed globally, are only sold in combination with estrogen, are currently sold only for noncontraceptive purposes, or were not given to participants continuously. Four researchers independently extracted data and two analyzed data using Excel and R.

RESULTS

We included 54 studies. Among studies at low or moderate risk of bias, the median Pearl Index rate (the failure rate during typical use) was 1.63 (range 0.00-14.20, IQR 4.03) and the median method failure Pearl Index rate (the failure rate during perfect use) was 0.97 (range 0.40-6.50, IQR 0.68). Excluding the newer formulations, Desogestrel and Drospirenone, which are closer to combined oral contraceptives in that they prevent pregnancy by inhibiting ovulation, the median Pearl Index rate is 2.00 (range 0.00-14.12, IQR 2.5) and the median method failure Pearl Index rate is 1.05 (range 0.00-10.90, IQR 1.38).

CONCLUSIONS

Among studies at low or moderate risk of bias, the median Pearl Index rate during typical POP use was much lower than currently estimated (7.00), while the median perfect use rate was similar to current estimates.

IMPLICATIONS

Future research should investigate the possibility that POPs may be much more effective during typical use than currently believed.

Interest in Continued Use After Participation in a Study of Over-the-Counter Progestin-Only Pills in the United States

OBJECTIVE

To assess interest in continued use of over-the-counter progestin-only pills among individuals who used them in a trial.

METHODS

From January 2020 to September 2021, we conducted a cross-sectional online survey with individuals who completed participation in a trial evaluating over-the-counter use of norgestrel 0.075 mg tablets in the United States. We calculated descriptive statistics, Pearson's chi-square and Fisher's exact tests, and logistic regression models to assess likelihood of future over-the-counter progestin-only pill use, reasons for interest/noninterest, situations for over-the-counter progestin-only pill use, willingness to pay for an over-the-counter progestin-only pill, likelihood of future preventive health screenings, prior difficulties getting prescription contraception, and background characteristics.

RESULTS

Among 550 adult and 115 adolescent participants (75% response rate), 83% reported likelihood of future over-the-counter progestin-only pill use. Hispanic/Latinx and Black participants and adults with public insurance, prior pregnancies, and some college reported higher likelihood of future use compared with their counterparts. Among likely users, 90% were interested in long-term use and 79 % ≥ 25 years of age reported they would get future preventive screenings; participants would pay up to $20/month on average. Primary reasons for interest included convenience (81%), ease of access (80%), and saving time (77%) and money (64%). The primary reason for noninterest was bleeding associated with progestin-only pill use (52%).

CONCLUSION

There was high interest in continuing to use over-the-counter progestin-only pills among individuals who had used them in a study. These findings highlight the real-world acceptability of taking a progestin-only pill without a prescription, and contribute to evidence supporting over-the-counter access.

New Contraception Update — Annovera, Phexxi, Slynd, and Twirla

Purpose of Review

In this review, we discuss the efficacy, safety, and benefits of four new contraceptive products available in the USA, specifically Annovera, Phexxi, Slynd, and Twirla.

Recent Findings

Annovera is a vaginal ring releasing ethinyl estradiol and segesterone acetate that can be used for up to one year (13 cycles), offering patients an effective, user-controlled option that may improve contraceptive access for those in low-resource settings or those with barriers to retrieving monthly prescriptions; however, given limited efficacy and safety data in people with body mass index (BMI) > 29 kg/m2, clinicians may consider whether Annovera is an appropriate contraceptive method for obese patients if there are other acceptable alternatives. Phexxi prescription-only vaginal gel is a user-controlled, non-hormonal, on-demand contraceptive method that represents a novel addition to the market with its additional uses as a personal lubricant and as a potential microbicide for urogenital infection prevention. Slynd, a drospirenone-only pill, provides more flexibility for delayed or missed pills while maintaining efficacy and a more favorable bleeding profile compared with previously available progestin-only pills. Lastly, Twirla is a transdermal patch releasing ethinyl estradiol and levonorgestrel that offers users an additional option for a user-controlled, combined hormonal contraceptive method without daily dosing; however, prescription is limited to patients with BMI < 30 kg/m2 due to decreased efficacy and VTE events in people with obesity.

Summary

The addition of these products expands the available options for pregnancy prevention to address unmet contraceptive needs.

An endocrine perspective on menstrual suppression for adolescents: achieving good suppression while optimizing bone health

Suppression of menstruation and/or ovarian function in adolescent girls may be desired for a variety of reasons. Numerous medical options exist. The choice of the appropriate modality for an individual patient depends on several factors based on differences in the efficacy of achieving menstrual suppression as well as in their side effect profiles. Adolescence is also a period of bone mass accrual in girls, and several of these modalities may negatively influence peak bone mass. This review focuses on the efficacy of achieving menstrual suppression and the effect on bone health of the various options through an overview of the current literature and also highlights areas in need of further research.

Hormonal Contraceptives, Intrauterine Devices, Gonadotropin-releasing Hormone Analogues and Testosterone: Menstrual Suppression in Special Adolescent Populations

Menstrual suppression (the use of hormonal contraceptive methods to eliminate or significantly decrease the frequency of menstrual cycles) is frequently used in the adolescent population for the management of menstrual symptoms such as heavy or painful periods, premenstrual syndrome, menstrual migraines, or even for patient preference. However, in cases of menstrual suppression in special populations additional risks and benefits need to be considered. The purpose of this article is to review the options and medical considerations for menstrual suppression in patients undergoing chemotherapy who might be at risk of abnormal uterine bleeding, those with intellectual or physical disability, and transgender and gender nonbinary individuals.

Norethindrone is superior to combined oral contraceptive pills in short-term delay of menses and onset of breakthrough bleeding: a randomized trial

Background

To determine whether oral norethindrone acetate is superior to combined oral contraceptives (OCP) in delaying menstruation and preventing breakthrough bleeding when started late in the cycle.

Methods

This article comprises of a case control study followed by a pilot randomized controlled study. In the first study, four women who presented late in their cycle and desired avoiding vaginal bleeding within 10 days before a wedding were started on norethindrone 5 mg three times daily and compared to age matched controls started on OCPs. Subsequently, a randomized controlled pilot study (n = 50) comparing OCPs to norethindrone for the retiming of menses was conducted. Percentage of women reporting spotting were compared with level of statistical significance set at p < 0.05.

Results

Of the norethindrone treated group, only 2 women (8%) reported spotting compared with 10 women (43%) in the control group (p < 0.01). Norethindrone recipients experienced significant weight gain, which resolved after cessation of therapy and had heavier withdrawal bleed (p < 0.04) when compared to controls. Patient satisfaction was significantly higher in the norethindrone group, with 80% willing to choose this method again. Time to conceive was significantly shorter in the norethindrone group (p < 0.03).

Conclusions

Norethindrone, begun on or before cycle day 12, is superior for women who desire to avoid breakthrough bleeding and maintain fertility when compared to OCPs. It is an ideal approach in patients presenting late in their cycle and who desire delaying menses as well as in circumstances when even minute amounts of breakthrough bleeding cannot be tolerated.

Trial registration

Clinicaltrials.gov NCT03594604, July 2018. Retrospectively registered.

Patterns of prescription and discontinuation of contraceptives for Swedish women with obesity and normal-weight women

Purpose: This study aimed to explore the prescription of different contraceptive methods to Swedish women with obesity and to compare the pattern of prescription and adherence to treatment between this group and normal-weight women. Materials and methods: This study included 371 women with obesity and 744 matched normal-weight women, aged 18-40. Medical records were scrutinised for the period 1 January 2010 to 31 December 2014. The retrieved variables included: background characteristics, prescribed contraceptive methods, adverse effects, duration of treatment, reason for discontinuation and bleeding pattern. Result: Progestin-only pills were mainly prescribed to women with obesity (44% vs. 20%, p = 0.001) whereas combined hormonal contraception was mainly prescribed to normal-weight women (60% vs. 21%, p < 0.0001). Thirty-three percent vs. 25% (p = 0.003) discontinued their contraceptive method within 1 year. The most commonly declared reason for discontinuation was bleeding disturbance (14.7% vs. 9.6%, p = 0.008). Conclusion: The most commonly prescribed contraceptive method in women with obesity was progestin-only pills, but surprisingly many women with obesity were prescribed combined hormonal contraception despite current Swedish and European guidelines. Incident users with obesity were significantly more likely to discontinue their contraceptive method within the first year of the study period, compared with incident normal-weight users.

Unscheduled vaginal bleeding with progestin-only contraceptive use

Nearly 20% of women using contraception are using progestin-only contraception, including progestin-only pills, depot-medroxyprogesterone acetate, subdermal etonogestrel implants, and levonorgestrel intrauterine devices. This number will continue to grow with the increased provision of long-acting reversible contraception. Although overall satisfaction among women using progestin-only contraception is high, dissatisfaction and discontinuation may be associated with unscheduled bleeding and spotting. The exact etiology of irregular bleeding associated with progestin-containing contraceptives is not completely understood, yet several mechanisms have been suggested. Several therapies targeting these mechanisms have been evaluated with mixed results. This paper will review the physiology and management of unscheduled bleeding with progestin-containing contraceptives.

Menstrual Management for Adolescents With Disabilities

The onset of menses for adolescents with physical or intellectual disabilities can affect their independence and add additional concerns for families at home, in schools, and in other settings. The pediatrician is the primary health care provider to explore and assist with the pubertal transition and menstrual management. Menstrual management of both normal and abnormal cycles may be requested to minimize hygiene issues, premenstrual symptoms, dysmenorrhea, heavy or irregular bleeding, contraception, and conditions exacerbated by the menstrual cycle. Several options are available for menstrual management, depending on the outcome that is desired, ranging from cycle regulation to complete amenorrhea. The use of medications or the request for surgeries to help with the menstrual cycles in teenagers with disabilities has medical, social, legal, and ethical implications. This clinical report is designed to help guide pediatricians in assisting adolescent females with intellectual and/or physical disabilities and their families in making decisions related to successfully navigating menarche and subsequent menstrual cycles.

Unscheduled bleeding and contraceptive choice: increasing satisfaction and continuation rates

Approximately half (51%) of the 6.6 million pregnancies in the US each year are unintended and half of those pregnancies (54%) occur among women not using contraception. Many women discontinue their contraceptives due to method dissatisfaction. Bothersome unscheduled bleeding is one of the main reasons cited by women for stopping a birth control method. Improving counseling and management of these side effects will aide in increasing satisfaction with contraceptive methods. The following review will discuss the bleeding profiles associated with the contraceptive options available in the US. A valuable resource from the Centers for Disease Control and Prevention, the US Selected Practice Recommendations for Contraceptive Use, will be introduced. Definitions of the types of unscheduled bleeding are included, as well as strategies for treatment for each contraceptive method. The evidence whether or not anticipatory counseling increases continuation rates will also be reviewed.

Canadian Contraception Consensus (Part 3 of 4): Chapter 8 - Progestin-Only Contraception

OBJECTIVE

To provide guidelines for health care providers on the use of contraceptive methods to prevent pregnancy and on the promotion of healthy sexuality.

OUTCOMES

Overall efficacy of cited contraceptive methods, assessing reduction in pregnancy rate, safety, ease of use, and side effects; the effect of cited contraceptive methods on sexual health and general well-being; and the relative cost and availability of cited contraceptive methods in Canada.

EVIDENCE

Published literature was retrieved through searches of Medline and The Cochrane Database from January 1994 to January 2015 using appropriate controlled vocabulary (e.g., contraception, sexuality, sexual health) and key words (e.g., contraception, family planning, hormonal contraception, emergency contraception). Results were restricted to systematic reviews, randomized control trials/controlled clinical trials, and observational studies published in English from January 1994 to January 2015. Searches were updated on a regular basis in incorporated in the guideline to June 2015. Grey (unpublished) literature was identified through searching the websites of health technology assessment and health technology-related agencies, clinical practice guideline collections, clinical trial registries, and national and international medical specialty societies.

VALUES

The quality of the evidence in this document was rated using the criteria described in the Report of the Canadian Task Force on Preventive Health Care (Table 1). CHAPTER 8: PROGESTIN-ONLY CONTRACEPTION: Summary Statements Recommendations.

Monthly Periods--Are They Necessary?

Menstrual suppression--the use of hormones to delay or eliminate menses--is often used in adolescents to manage conditions associated with the menstrual cycle and to accommodate lifestyle preferences. Reducing the frequency of menstrual bleeding does not cause any known physiologic harm and has potential short-term and long-term advantages. Different methods used for menstrual suppression, however, have associated risks and side effects that need to be weighed against the benefits of controlling menses. This article reviews the advantages and disadvantages of menstrual suppression and the different methods available for adolescents.

Retrospective review of norethindrone use in adolescents

STUDY OBJECTIVE

Our objectives were to review norethindrone use in an adolescent population in a tertiary care center and to assess the effectiveness of the norethindrone taper in the management of acute heavy menstrual bleeding in adolescents.

DESIGN

Retrospective cohort study.

SETTING

Tertiary care center.

PARTICIPANTS

176 adolescent females prescribed norethindrone 0.35 mg between July 2007 and September 2010.

INTERVENTIONS

None.

MAIN OUTCOME MEASURES

Discontinuation and irregular bleeding rates.

RESULTS

Mean age was 14.8 ± 2.3 years. Most common indication for use was heavy menstrual bleeding (32.9%). Most common reasons for use of a progestin only pill were neurologic (27.8%) and cardiovascular diseases (17.6%). Discontinuation rate was 48.5%, most commonly for irregular bleeding (54.5%). Irregular bleeding and systemic side effects were associated with discontinuation (P = .006 and .003 respectively). No serious adverse events were reported. Twenty patients required norethindrone taper for heavy bleeding; of this group 78.9% experienced complete cessation of bleeding within 7 days.

CONCLUSIONS

Our findings support use of norethindrone as an effective alternative among adolescents with contraindications to administration of estrogen and for whom control of acute heavy menstrual bleeding is desired.

Randomized, Crossover and Single-Dose Bioquivalence Study of Two Oral Desogestrel Formulations (Film-Coated Tablets of 75 μg) in Healthy Female Volunteers

Despite the increase in the substitution of branded medicinal product with generic drugs, this is a controversial issue for some pharmacological groups (such as contraceptives).

The aim of the present clinical trial was to assess the bioequivalence and tolerability of two oral formulations of desogestrel.

Thirty-three healthy female volunteers participated in this randomized and two-way crossover study. During two separate experimental periods, with at least four weeks of washout period, women received a single oral dose of 75 μg of desogestrel from each of the formulations (test formulation and reference formulation). Desogestrel bioavailability was determined by the measurement of 3-ketodesogestrel plasma concentration.

Pharmacokinetic parameters were comparable and the 90% CI for the ratio of C_max (96.14–114.53%) and AUC_0–t (105.73–123.83%) values for the test and reference formulations fell within the established regulatory interval (80–125%). Both formulations were also comparable in terms of tolerability.

From the results of this study it can be concluded that test formulation (desogestrel 75 μg, Cyndea PHARMA S.L.) is bioequivalent to the reference formulation (Cerazet® 75 μg, Organon Española S.A.).

Effects of an estrogen-free, desogestrel-containing oral contraceptive in women with migraine with aura: a prospective diary-based pilot study

BACKGROUND

Migraine with aura (MA) is a contraindication to the use of combined oral contraceptives (COCs) because of the increased risk of ischemic stroke. Progestogen-only contraceptive pill (POP) is a safe alternative to COCs and it is preferable in women with cerebrovascular diseases or risk factors for stroke.

STUDY DESIGN

Prospective diary-based pilot study. Thirty women with MA (n = 15 who have never used COCs and n = 15 who had previously used COCs were diagnosed according to the International Headache Society criteria. The observational period lasted 9 months during which women filled in a diary with the clinical characteristics of headache attacks. After a 3-month run-in period, each subject received an estrogen-free desogestrel (DSG) (75 mcg/day)-containing OC (Cerazette(®); Schering-Plough, formerly NV Organon, Oss, The Netherlands). Follow-up evaluations were planned at the end of the third and sixth month of treatment.

RESULTS

The number (mean±S.D.) of migraine attacks was significantly reduced both in previous COCs users (from 3.9±1.0 to 2.9±0.8; p<.001) and nonusers (from 3.2±0.9 to 2.6±1.3; p<.02) following 6 months of POP use in comparison with the run-in period. Duration of headache pain did not differ significantly in both groups throughout the study. Interestingly enough, a beneficial POP effect on the duration (mean±S.D.) of visual aura (from 16.3±9.5 to 11.4±5.6 min) and on the total duration (mean±S.D.) of neurological symptoms (from 33.6±23.3 to 18.6±18.0 min) was only significantly reported by previous COCs users (p<.001, for both) by the end of the study period. The POP was well tolerated by each woman and the bleeding pattern was variable with a tendency towards infrequent bleeding.

CONCLUSIONS

The present study supports the use of the POP containing desogestrel in a population of women with MA and underlines a positive effect on symptoms of aura, especially in MA sensitive to previous use of COCs.

Canadian Contraception Consensus

This document has been archived because it contains outdated information. It should not be consulted for clinical use, but for historical research only. Please visit the journal website for the most recent guidelines.

Single monthly administration of the anti-progestagen Org 31710 in users of the 75 microg desogestrel progestagen-only pill: effects on pituitary-ovarian activity

Endocrine and ultrasound effects were studied of an intermittent (every 28 days) oral administration of 150 mg of the anti-progestagen Org 31710 during the continued daily use of 75 microg desogestrel (DSG) for progestagen-only contraception. A randomized, double-blind, placebo-controlled two-centre study was conducted in 50 healthy volunteers. Serum luteinizing hormone (LH), follicle stimulating hormone (FSH), oestradiol and progesterone concentrations, and follicle number and size were studied, as well as endometrial thickness, which was assessed by transvaginal sonography at least twice weekly during a single medication cycle (cycle 3-5). Forty-eight women were evaluated (Org 31710, n = 25; placebo, n = 23). Seven ovulations were observed in the treated group versus none in the placebo group. LH concentrations were higher on days 9 and 11 and oestradiol concentrations lower on day 3 in the treated group, irrespective of whether ovulation occurred. No parameter could predict ovulation. Endometrial thickness was greater on cycle days 7-13 and 19 in the treated group. However, within the Org 31710 group, no significant differences were found in volunteers who did or did not ovulate. Observed differences may be attributed to a competitive effect of Org 31710 with progestagen-induced suppression of the pituitary-ovarian axis, altered oestradiol feedback mechanisms, and/or altered receptor availability.

Eight years of experience in the first Romanian center of family planning and contraception

This study describes 8 years of experience (1990-97) in the first Romanian center for family planning and contraception, which started in Bucharest at the Clinic Hospital of Obstetrics and Gynecology 'Prof. Dr. P. Sirbu' on 27 February 1990. A total of 14,258 women had attended the clinic by 1 January 1998. Trends in the use of contraceptives and the number of births and abortions at the center are described. During the 8 years, the induced abortions decreased by 65% and the uncompleted abortions (illegal abortions) by 45%. Hormonal contraception was the most commonly used contraceptive method (61.5%), followed by intrauterine devices (28.8%) and local contraception (barrier methods: condoms, diaphragms, spermicides) (9%).

Serum norethindrone levels and menstrual pattern after the use of norethindrone implants in rhesus monkeys

Subdermal Silastic implants releasing norethindrone (NET) were inserted in five rhesus monkeys for a period of seven months. The total length of the implants used was 160 mm (eight implants of 20 mm each) containing 160 mg of NET (1 mg NET/mm). The in vivo release rate of NET from the Silastic implants containing 160 mg NET was 3.12 micrograms/day/mm. Menstrual bleeding records were maintained and serum NET levels were estimated from blood samples collected during the period implants remained in situ. There was an initial rise in NET levels, followed by fluctuating levels of NET in three out of five monkeys. The menstrual cycle or bleeding episodes showed a pattern commensurate with the circulating NET levels. None of the monkeys showed intermenstrual bleeding during the treatment period. High levels of NET seem advantageous for an undisturbed menstrual cycle.

Advances in Hormonal Contraception

Breakthroughs involving innovative methods of hormonal and nonhormonal birth control have been severely limited in the United States over the last 30 years. This trend has changed with the introduction of new choices in birth control in the 1990s. This article focuses on these advances in hormonal contraception and provides information on the use of oral contraceptives, hormonal implants, and injectable methods of contraception currently available in the United States. Each method is assessed and recommendations are made for proper patient and method selection. This information is intended to supply the pharmacist with sufficient information to appropriately counsel patients on the use of hormonal contraception in the 1990s.

Some methodological considerations of a progestin-only oral contraceptive study from a programmatic perspective

Among the limited number of reports on progestin-oral contraceptives (POCs), noncomparative studies conducted at family planning clinics have been the most often reported. This research trend will probably continue. Generally, noncomparative studies address a number of practical issues on POC use, and such studies have made important contributions to the understanding of this contraceptive modality. However, some studies have presented results that are either difficult to extrapolate for potential users or conflict with other findings. This article reviews several studies and suggests ways to improve the study methodology. Well-conceived, -executed, and -analyzed noncomparative studies can cost-effectively address a number of practical issues of POC use that have not been adequately addressed. Additional topics with programmatic utility, such as the effect of local background variables on POC acceptability, and the place of POCs in the ever-increasing contraceptive spectrum, are also discussed.

The safety and efficacy issues of progestin-only oral contraceptives--an epidemiologic perspective

Progestogen-only oral contraceptives (POCs) are generally considered a good contraceptive choice for brestfeeding women and for women who want to use an oral form of contraception, but are not suited for, or cannot tolerate the side effects of, estrogen-containing preparations. However, a number of POCs' safety, efficacy and other related issues remain to be addressed. This paper reviews recent literature and evaluates these issues from an epidemiologic perspective. The small number of users imposes severe limitations in designing epidemiologic studies to address POCs' long-term safety issues, but available information suggests POCs are at least as safe as, if not safer than, COCs. Compared to COCs, POCs are more likely to cause menstrual disturbances which, in turn, could affect their acceptability and lead to poor compliance and hence higher pregnancy rates. POCs' efficacy has been estimated to be between 1.4 and 4.3 pregnancies per 100 woman-years of use. Lower pregnancy rates approaching those of COCs have been reported in centers with good counseling. POCs' benefits outweigh their risks. However, more studies are needed to further address POCs' safety and efficacy issues.

A multicenter clinical trial of a progestin-only oral contraceptive in lactating women

A non-comparative study of a progestin-only oral contraceptive (POC) containing 75 micrograms norgestrel was conducted at 22 sites in 14 countries. This study was designed to evaluate safety, contraceptive efficacy, and the overall acceptability of a POC in breastfeeding women. A total of 4,088 women entered the study over a three-year period and 29,399 woman-months of experience was gathered. Women had follow-up visits at 2, 6, and 11 months after admission. Headaches and vaginal discharge were the medical complaints most commonly reported by women, both prior to and after admission. Menstrual problems were reported by 59% of the women after admission. Of the 3,714 women who returned for at least one follow-up visit, 1,101 (29.6%) discontinued through month 11. The 11-month total discontinuation percentage, including those lost to follow-up (25.3%) was 51.6%. The most common reason given for discontinuation was a woman's desire for a change in contraceptive method. Only 4.9% discontinued pill use for menstrual problems, a percentage far below those generally reported for POCs. Twenty-nine unintended pregnancies occurred through 11 months giving a gross cumulative life table rate of 1.2 per 100 women (Pearl Index = 1.4). The POC appears to be a safe, effective and acceptable contraceptive option for postpartum breastfeeding women.

The progestin-only oral contraceptive--its place in postpartum contraception

The progestin-only oral contraceptive (POC) is not a widely-used method of contraception, possibly due to competition from other contemporary contraceptive methods or misunderstanding and prejudices among clients and/or service providers. Because of its underuse, the POC, as a contraceptive method, is under-studied. This article evaluates the general merits of the POC and its disadvantages relative to combined oral contraceptives (COCs) and other contraceptive methods, specifically during the postpartum period and particularly for breastfeeding women. We find that the POC appears to be a safe and acceptable contraceptive method for postpartum women who are fully or nearly fully breastfeeding at six months postpartum or when menstruation returns. The POC could be considered for use at any time by non-breastfeeding postpartum women. The need for empirical studies of the POC is also discussed.