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Plan B (Levonorgestrel) - Summary



Each Plan B tablet contains 0.75 mg of a single active steroid ingredient, levonorgestrel [18,19-Dinorpregn-4-en-20-yn-3-one-13-ethyl-17-hydroxy-, (17α)-(-)-], a totally synthetic progestogen.

Plan B® is a progestin-only emergency contraceptive indicated for prevention of pregnancy following unprotected intercourse or a known or suspected contraceptive failure. To obtain optimal efficacy, the first tablet should be taken as soon as possible within 72 hours of intercourse. The second tablet should be taken 12 hours later.

Plan B is available only by prescription for women younger than age 17 years, and available over the counter for women 17 years and older.

Plan B is not indicated for routine use as a contraceptive.

See all Plan B indications & dosage >>


Media Articles Related to Plan B (Levonorgestrel)

Domestic violence deters contraception
Source: Abortion News From Medical News Today [2015.04.02]
Domestic violence takes many forms. The control of a woman's reproductive choices by her partner is one of them.

'15 million unwanted pregnancies' created by low contraception in 35 poorer countries
Source: Abortion News From Medical News Today [2015.02.05]
Some 90% of the 16.7 million unwanted pregnancies across a third of the world's population every year are due to a failure to use modern contraception, study suggests.

Research reveals more than half of young women who have abortions were using contraception when they fell pregnant
Source: Abortion News From Medical News Today [2014.04.30]
Reproductive health charity Marie Stopes UK has launched the findings of the first research in the UK into the contraceptive use of women aged 16-24 having one or more abortions.

Female cystic fibrosis patients need more contraceptive guidance, study finds
Source: Cystic Fibrosis News From Medical News Today [2015.05.11]
As life span for once-deadly disease increases, unplanned and mistimed pregnancies are commonOnly half of women with cystic fibrosis (CF) report using contraception and frequently apt to become...

New research shows a statistical significant association between increased LARC usage and reduction in teenage pregnancy and abortion rates in England
Source: Abortion News From Medical News Today [2014.11.27]
New findings, published in the International Journal of Women's Health, show increased long-acting reversible contraception (LARC) usage in England was significantly associated with decreased...

more news >>

Published Studies Related to Plan B (Levonorgestrel)

Short-Term Treatment of Bothersome Bleeding for Etonogestrel Implant Users Using a 14-Day Oral Contraceptive Pill Regimen: A Randomized Controlled Trial. [2015]
during a 14-day course... CONCLUSION: Bothersome bleeding in etonogestrel contraceptive implant users will

An overview of four studies of a continuous oral contraceptive (levonorgestrel 90 mcg/ethinyl estradiol 20 mcg) on premenstrual dysphoric disorder and premenstrual syndrome. [2012]
and premenstrual syndrome (PMS)... CONCLUSIONS: These data, although not consistent, indicate that continuous LNG/EE

Ethinyl estradiol and levonorgestrel pharmacokinetics with a low-dose transdermal contraceptive delivery system, AG200-15: a randomized controlled trial. [2011.11.29]
BACKGROUND: This study evaluated the ethinyl estradiol (EE) and levonorgestrel (LNG) pharmacokinetic profiles of AG200-15, a transdermal contraceptive delivery system, compared with a combination oral contraceptive (COC) containing EE 35 mcg and norgestimate 250 mcg... CONCLUSIONS: EE and LNG daily exposure during AG200-15 treatment was within the range reported for a low-dose COC. The daily EE dose with AG 200-15 was equivalent to a 30-mcg COC and was safe and well tolerated. Copyright (c) 2011 Elsevier Inc. All rights reserved.

Naproxen or estradiol for bleeding and spotting with the levonorgestrel intrauterine system: a randomized controlled trial. [2011.09.24]
OBJECTIVE: The purpose of this study was to evaluate whether oral naproxen or transdermal estradiol decreases bleeding and spotting in women who are initiating the levonorgestrel-releasing intrauterine system... CONCLUSION: The administration of naproxen resulted in a reduction in bleeding and spotting days compared with placebo. Copyright A(c) 2011 Mosby, Inc. All rights reserved.

Immediate versus delayed insertion of the levonorgestrel-releasing intrauterine device following dilation and evacuation: a randomized controlled trial. [2011.09.13]
BACKGROUND: The study was conducted to compare 6-month usage of the levonorgestrel-releasing intrauterine device (LNG-IUD) when placed immediately or 3 to 6 weeks after dilation and evacuation (D&E) procedure... CONCLUSION: Significantly more participants had the LNG-IUD placed in the immediate insertion group compared with the delayed insertion group. Given the low risk of complications, immediate post-D&E insertion of the LNG-IUD should be offered, especially for populations that may have difficulty returning for follow-up. Copyright (c) 2011 Elsevier Inc. All rights reserved.

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Clinical Trials Related to Plan B (Levonorgestrel)

Medifast 5 & 1 Plan [Not yet recruiting]
The purpose of this study is to compare the effectiveness of the Medifast 5 & 1 Plan to a food-based, reduced-energy diet plan. The study will be conducted over 52 weeks, including a 26-week weight-loss phase and a 26-week weight-maintenance phase. 120 participants will be enrolled, with 60 randomized to the Medifast 5 & 1 Plan and 60 randomized to food-based, reduced-energy diet plan. Multiple measures will be performed at baseline, 26 weeks, and 52 weeks, including anthropometry, body composition, blood pressure, blood assays, and appetite sensations.

Planned CORR: Planned Care for Obesity and Risk Reduction [Recruiting]
The researchers propose a randomized controlled trial to evaluate how well an intervention, Planned Care for Obesity & Risk Reduction (Planned CORR), supports primary care treatment of obesity in adults with at least one cardiovascular risk factor (CVRF).

Comparing Asthma Action Plans for Pediatric Asthma [Recruiting]
The purpose of this study is to evaluate and compare the relative effectiveness of two asthma action plans (pictorial versus written) in terms of asthma action plan knowledge, medication use, and family satisfaction with asthma education.

The Electronic Asthma Action Plan System for Implementation in Primary Care [Recruiting]
Asthma is a common and potentially fatal chronic disease. An asthma action plan (AAP) is a written plan produced by a physician for a patient with asthma, to provide education and guidelines for self-management of worsening asthma symptoms. Studies have shown that AAPs effectively improve asthma control, but physicians fail to provide AAPs due to lack of time and adequate skills. The investigators propose to develop a computerized tool that will automatically generate an electronic version of the AAP, based on patient responses to questions about their current asthma control. The investigators hope that this system will eliminate the barriers that physicians face in delivery of an AAP and will increase the frequency with which physicians are able to deliver AAPs to patients with asthma. The objectives of the study are to determine the impact of an electronic asthma action plan system on asthma action plan delivery by primary care physicians, to determine the impact of an electronic asthma action plan system on patient hospitalisations, emergency room (ER) visits, unscheduled visits to the doctor, total visits to the doctor, days off work or school, nocturnal asthma symptoms, daytime asthma symptoms, daytime rescue puffer use, and quality of life , and to measure physicians' perceptions of and satisfaction with the system.

Specific Care and Assistance Plan for Alzheimer's Disease [Completed]
The main objective of this work is to assess the feasibility and efficacy of a specific Care and Assistance Plan for Alzheimer's disease (PLASA). The main outcome measure selected is incapacity in carrying out the basic activities of daily living, evaluated by the ADCS-ADL scale .

The PLASA was developed by a working group appointed by the Direction Générale de la Santé as part of the government programme of action on Alzheimer's disease (October 2001, Ministère de l'Emploi et de la Solidarité).

more trials >>

Reports of Suspected Plan B (Levonorgestrel) Side Effects

Abortion Spontaneous (5)Vaginal Haemorrhage (3)Pulmonary Embolism (2)Unintended Pregnancy (2)Menstruation Irregular (2)Blighted Ovum (2)Muscle Spasms (2)Maternal Exposure Before Pregnancy (2)Metrorrhagia (2)Asthma (1)more >>

Page last updated: 2015-08-10

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