- Extended cycle combined oral contraceptive pill
Extended cycle combined oral contraceptive pills are COCPs packaged to reduce or eliminate the withdrawal bleeding that occurs once every 28 days in traditionally packaged COCPs. Extended cycle use of COCPs may also be called menstrual suppression. [cite web |url=http://www.arhp.org/healthmatters/UnderstandingMenstrualSuppression.cfm |title=Health Matters: Understanding Menstrual Suppression |accessdate=2007-11-16 |year = 2006 |month = October |publisher=Association of Reproductive Health Professionals]
Other combined hormonal contraceptives (those containing both an
estrogenand a progestogen) may also be used in an extended or continuous cycle. For example, the vaginal ring known as the NuvaRinghas been studied for extended cycle use [cite web |author=Organon |month=September 15, |year=2005 |title=NuvaRing is effective and well tolerated in extended use - Most women would like to decrease their number of periods a year |url=http://www.organon.com/media/press_releases/2005_09_15_nuvaring_is_effective_and_well_tolerated_in_extended_use.asp |accessdate=2008-05-04
cite journal |author=Miller L, Verhoeven CH, Hout J |year=2005 |title=Extended regimens of the contraceptive vaginal ring: a randomized trial |journal=Obstet Gynecol |volume=106 |issue=3 |pages=473–82 |pmid=16135576
cite journal |author=Barreiros FA, Guazzelli CA, de Araujo FF, Barbosa R |year=2007 |title=Bleeding patterns of women using extended regimens of the contraceptive vaginal ring |journal=Contraception |volume=75 |issue=3 |pages=204–8 |pmid=17303490 |doi=10.1016/j.contraception.2006.10.009] and the monthly injection
Lunellemay similarly eliminate bleeding. [cite web |title=Lunelle (Monthly Injection) |publisher=Feminist Women's Health Center |month=January | year=2006 |url=http://www.fwhc.org/birth-control/lunelle.htm |accessdate=2007-06-17 ]
Seasonale was first developed by Barr Pharmaceuticals, in collaboration with
Eastern Virginia Medical School, under an agreement.cite web|month=February | year=2003 |url= http://headaches.about.com/cs/women/a/seasonale.htm?terms=seasonale |title= Seasonale Extended Cycle OC Approved |publisher= About.com| accessdate=2006-10-22] The FDA approved Seasonale in the United Stateson September 5 2003. [cite web|date= September 5, 2003|url= http://www.fda.gov/bbs/topics/ANSWERS/2003/ANS01251.html |title= FDA Approves Seasonale Oral Contraceptive|publisher= United States Food and Drug Administration|accessdate=2006-10-22] Barr Pharmaceuticals, its manufacturer, claimed at the time of Seasonale's approval that it would cost one dollar per pill. Seasonale is one of Barr Pharmaceuticals' 22 oral contraceptive products.cite web|url= http://www.barrlabs.com/generic/keyproducts/contraceptives.php |title= Barr Pharmaceuticals, Inc - Key Generic Products - Oral Contraceptives|publisher= Barr Pharmaceuticals|accessdate=2006-10-22] Health Canadaapproved Seasonale in July 2007, and Paladin Labs began distributing it in Canadaon January 4, 2008.Magnan, Michelle, 2007-07-06, [http://www.canada.com/topics/bodyandhealth/sexualhealth/story.html?id=af6f4a7b-fc74-4433-816d-7fc5862745da&k=10868 Health Canada approves Seasonale] , "Calgary Herald".] cite web|url= http://cnrp.ccnmatthews.com/client/paladin_labs/releaseen.jsp?year=2008&actionFor=807154&releaseSeq=1 |title= Paladin Labs Announces SEASONALE Launch|publisher= Paladin Labs, Inc.|date= 2008-01-04|accessdate=2008-02-06]
When a woman takes COCPs (
combined oral contraceptive pills), the hormones in the pills prevent both ovulation and shedding of the endometrium( menstruation). Traditionally, COCPs are packaged with 21 active (hormone-containing) pills and 7 placebopills. During the week of placebo pills, withdrawal bleeding occurs and simulates an average 28-day menstrual cycle. The placebo pills are not required for pregnancy protection, and with any monophasic COCP the placebo pills may be skipped (going straight to the next pack of active pills) to prevent the withdrawal bleeding. [cite journal |author=Kripke C |title=Cyclic vs. continuous or extended-cycle combined contraceptives |journal=American family physician |volume=73 |issue=5 |pages=804 |year=2006 |pmid=16529087 |url=http://www.aafp.org/afp/20060301/cochrane.html#c3 |accessdate=2007-06-17] With bi- and tri-phasic pills, skipping the placebo week results in a sudden change in hormone levels, which may cause irregular spotting or flow.
Recently, several pharmaceutical companies have gained FDA approval to package COCPs for the intended use of reducing the frequency of or completely eliminating withdrawal bleeding.
Extended or continuous use of COCPs has been used for many years to treat
endometriosis, dysmenorrhea, and menstruation-associated symptoms. cite journal |author=Edelman AB, Gallo MF, Jensen JT, Nichols MD, Schulz KF, Grimes DA |title=Continuous or extended cycle vs. cyclic use of combined oral contraceptives for contraception |journal=Cochrane database of systematic reviews (Online) |volume= |issue=3 |month=July | year=2005 |pmid=16034942 |doi=10.1002/14651858.CD004695.pub2] Some studies have suggested that women who experience premenstrual-type symptoms during the placebo (hormone-free) week of traditionally packaged COCPs may experience significantly fewer symptoms when placed on extended cycle COCP regimens. [cite journal |author=Coffee AL, Kuehl TJ, Willis S, Sulak PJ |title=Oral contraceptives and premenstrual symptoms: comparison of a 21/7 and extended regimen |journal=Am. J. Obstet. Gynecol. |volume=195 |issue=5 |pages=1311–9 |year=2006 |pmid=16796986 |doi=10.1016/j.ajog.2006.05.012]
More recently, personal preference to avoid menstruation has also become a common reason for use. Personal preference is the most common reason extended cycle or continuous use COCPs are prescribed to adolescents. [cite journal |author=Gerschultz KL, Sucato GS, Hennon TR, Murray PJ, Gold MA |title=Extended cycling of combined hormonal contraceptives in adolescents: physician views and prescribing practices |journal=The Journal of adolescent health : official publication of the Society for Adolescent Medicine |volume=40 |issue=2 |pages=151–7 |year=2007 |pmid=17259055 |doi=10.1016/j.jadohealth.2006.09.013] The Society for Menstrual Cycle Research holds that this use of COCPs does not have sufficient safety studies to justify promotion as a lifestyle choice (as opposed to medical indications), and criticizes what it perceives as negative portrayals of normal menstrual cycles in promotional literature for extended and continuous COCP use. [cite web |publisher=Society for Menstrual Cycle Research |title=Menstruation Is Not A Disease | url=http://menstruationresearch.org/position/menstrual-suppression-new-2007/ |accessdate=2007-11-16 | date=
With all extended-cycle COCPs,
breakthrough bleedingis the most common side effect, although it tends to decrease over time. cite journal |author=Anderson FD, Gibbons W, Portman D |title=Long-term safety of an extended-cycle oral contraceptive (Seasonale): a 2-year multicenter open-label extension trial |journal=Am. J. Obstet. Gynecol. |volume=195 |issue=1 |pages=92–6 |year=2006 |pmid=16813747 |doi=10.1016/j.ajog.2005.12.045] In a 12-month study of a continuous COCP regimen, 59% of women experienced no bleeding in months six through twelve and 79% of women experienced no bleeding in month twelve. [cite journal |author=Archer DF, Jensen JT, Johnson JV, Borisute H, Grubb GS, Constantine GD |title=Evaluation of a continuous regimen of levonorgestrel/ethinyl estradiol: phase 3 study results |journal=Contraception |volume=74 |issue=6 |pages=439–45 |year=2006 |pmid=17157099 |doi=10.1016/j.contraception.2006.07.005] Extended or continuous use of COCPs or other combined hormonal contraceptives carries the same risk of side effects and medical risks as traditional COCP use. At least one doctor, Dr. Susan Rako, has suggested that extended or continuous use of COCPs may carry additional risks over traditional use. [cite web |last=Rako |first=Susan |work=Letter from the President | title= Here are some important facts you should know | url= http://www.womenshealthonalert.com/index.html | accessdate= 2007-11-16 | year=2005] There is no available data at this time concerning the long term effects of menstrual suppression on a woman's overall health. There exists concern in the medical field that increasing the amount of hormones typically taken by a woman may have an adverse effect on her long term health, but there is no data to confirm or disprove this.
One of the early extended-cycle COCPs, Seasonale, was marketed with the campaign, "Fewer periods. More possibilities." In December of 2004, Barr Pharmaceuticals was warned by the FDA concerning these television advertisements. As the warning stated, "By omitting and minimizing the risks associated with Seasonale, the TV ad misleadingly suggests that Seasonale is safer than has been demonstrated by substantial evidence or substantial clinical experience." [cite web|month=December | year=2003 |url= http://www.fda.gov/cder/warn/2004/12748.pdf |title= Seasonale (levonorgestrel/ethinyl estradiol) Tablets MACMIS ID #12748: 2004 |publisher= United States Department of Health & Human Services| accessdate=2006-10-22|format=PDF] Although clinical studies had proven Seasonale to be effective in preventing pregnancy, the FDA felt the commercial advertisements omitted the common side effects of irregular vaginal bleeding or spotting.
"Seasonale" is produced by Duramed Pharmaceuticals, a subsidiary of
Barr Pharmaceuticals. "Quasense" is the generic version produced by Watson Pharmaceuticals. Seasonale contains 30 micrograms of ethinylestradioland 150 micrograms of levonorgestrelin each active pill. Seasonale reduces the frequency of menstrual periodsfrom thirteen per year to four per year by changing the regimen of active pills from 21 to 84. Each package has 84 active pills and seven placebopills to be taken at the end of the active cycle.
"Seasonique", also produced by Duramed Pharmaceuticals, has active pills and packaging identical to Seasonale, but replaces the placebo week with a low-dosage week of estrogen.
"Lybrel" is produced by
Wyeth Pharmaceuticals. It contains 90 mcg levonorgestreland 20 mcg ethinyl estradiolin each pill, and is designed to be taken continuously with no placebos. cite web |title=FDA Approves Lybrel, First Low Dose Combination Oral Contraceptive Offering Women the Opportunity to Be Period-Free Over Time |publisher=PR Newswire Association |date= 2007-05-22|url=http://sev.prnewswire.com/health-care-hospitals/20070522/NYTU19322052007-1.html |accessdate=2007-06-17 ]
* [http://www.lybrel.com Lybrel official site]
* [http://www.seasonale.com/ Seasonale and Seasonique official site]
* [http://www.noperiod.com/ Pro-extended cycle COCP site by Leslie Miller, M.D.]
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