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DESOGEN® Tablets (desogestrel and ethinyl estradiol tablets USP) is indicated for the prevention of pregnancy in women who elect to use this product as a method of contraception.
Oral contraceptives are highly effective. Table 1 lists the typical unintended pregnancy rates for users of combination oral contraceptives and other methods of contraception. The efficacy of these contraceptive methods, except sterilization, the IUD, and implants, depends upon the reliability with which they are used. Correct and consistent use of these methods can result in lower failure rates.
TABLE 1: PERCENTAGE OF WOMEN EXPERIENCING AN
UNINTENDED PREGNANCY DURING THE FIRST YEAR OF TYPICAL USE AND THE FIRST YEAR OF
PERFECT USE OF CONTRACEPTION AND THE PERCENTAGE CONTINUING USE AT THE END OF
THE FIRST YEAR: UNITED STATES
|% of Women Experiencing an Unintended Pregnancy within the First Year of Use||% of Women Continuing Use at One Year*|
|Method (1)||Typical Use† (2)||Perfect Use‡ (3)||(4)|
|Copper T 380A||0.8||0.6||78|
|Norplant and Norplant-2||0.05||0.05||88|
|Emergency Contraceptive Pills: Treatment initiated
within 72 hours after unprotected intercourse reduces risk of pregnancy by at
Lactational Amenorrhea Method: LAM is a highly effective, temporary method of contraception.è Source: Trussell J, Stewart F, Contraceptive Efficacy. In Hatcher RA, Trussell J, Stewart F, Cates W, Stewart GK, Kowal D, Guest F, Contraceptive Technology: Seventeenth Revised Edition. New York, NY: Irvington Publishers, 1998.
* Among couples attempting to avoid pregnancy, the percentage who continue to use a method for one year
† Among typical couples who initiate use of a method (not necessarily for the first time), the percentage who experience an accidental pregnancy during the first year if they do not stop use for any other reason
‡ Among couples who initiate use of a method (not necessarily for the first time) and who use it perfectly (both consistently and correctly), the percentage who experience an accidental pregnancy during the first year if they do not stop use for any other reason
§ The percentage of women becoming pregnant noted in columns2,3 are based on data from populations where contraception is not used and from women who cease using contraception in order to become pregnant. Among such populations, about 89% became pregnant in one year. This estimate was lowered slightly (to 85%) to represent the percentage that would become pregnant within one year among women now relying on reversible methods of contraception if they abandon contraception altogether
¶ Foams, creams, gels, vaginal suppositories and vaginal film
# Cervical mucous (ovulation) method supplemented by calendar in the preovulatory and basal body temperature in the postovulatory phases
Þ With spermicidal cream or jelly
β Without spermicides
à The treatment schedule is one dose within 72 hours after unprotected intercourse and a second dose 12 hours after the first dose. The Food and Drug Administration has declared the following brands of oral contraceptives to be safe and effective for emergency contraception: Ovral® (1 dose is 2 white pills), Alesse®(1 dose is 5 pink pills), Nordette® or Levlen® (1 dose is 2 light orange pills), Lo/Ovral® (1 dose is 4 white pills), Triphasil® or Tri-Levlen® (1 dose is 4 yellow pills)
è However, to maintain effective protection against pregnancy, another method of contraception must be used as soon as menstruation resumes, the frequency or duration of breast-feeds is reduced, bottle feeds are introduced or the baby reaches six months of age
DOSAGE AND ADMINISTRATION
To achieve maximum contraceptive effectiveness, DESOGEN® Tablets (desogestrel and ethinyl estradiol tablets USP) must be taken exactly as directed, at the same time every day, and at intervals not exceeding 24 hours. DESOGEN® may be initiated using either a Sunday start or a Day 1 start.
NOTE: Seven different “day label strips” are provided to accommodate the selected start regimen. The patient should place the self-adhesive “day label strip” that corresponds to her starting day on the blister card above the first row of tablets.
During The First Cycle Of Use
IMPORTANT: The possibility of ovulation and conception prior to initiation of use of DESOGEN® Tablets (desogestrel and ethinyl estradiol tablets USP) should be considered. A woman can begin to take DESOGEN® either on the first Sunday after the onset of her menstrual period (Sunday Start) or on the first day of her menstrual period (Day 1 Start). When switching from another oral contraceptive, DESOGEN® should be started on the same day that a new pack of the previous oral contraceptive would have been started.
When initiating a Sunday start regimen, another method of contraception, such as condoms or spermicide, should be used for the first 7 consecutive days of taking DESOGEN® Tablets (desogestrel and ethinyl estradiol tablets USP).
Using a Sunday start, tablets are taken daily without interruption as follows: The first white tablet should be taken on the first Sunday after menstruation begins (if menstruation begins on Sunday, the first white tablet is taken on that day). Tablets are then taken sequentially following the arrows marked on the blister card. One white tablet is taken daily for 21 days, followed by 1 green (inactive) tablet daily for 7 days. For all subsequent cycles, the patient then begins a new 28-tablet regimen on the next day (Sunday) after taking the last green (inactive) tablet. [If switching from a different Sunday Start oral contraceptive, the first DESOGEN® tablet should be taken on the same day that a new pack of the previous oral contraceptive would have been started.] If a patient misses 1 white (active) tablet in Weeks 1, 2, or 3, she should take the missed tablet as soon as she remembers. If the patient misses 2 consecutive white tablets in Week 1 or Week 2, the patient should take 2 tablets the day she remembers and 2 tablets the next day; thereafter, the patient should resume taking 1 tablet daily until she finishes the cycle pack. The patient should be instructed to use a back-up method of birth control (such as condoms or spermicide) if she has intercourse in the 7 days after she restarts her pills. If the patient misses 2 consecutive white tablets in the third week or misses 3 or more white tablets in a row at any time during the cycle, the patient should keep taking 1 white tablet daily until the next Sunday. On Sunday the patient should throw out the rest of that cycle pack and start a new cycle pack that same day. The patient should be instructed to use a back-up method of birth control if she has intercourse in the 7 days after restarting her pills.
Complete instructions to facilitate patient counseling on proper pill usage can be found in Detailed or Brief Patient Labeling (“How to Take the Pill” section).
Day 1 Start
Counting the first day of menstruation as “Day 1”, the first white tablet should be taken on the first day of menstrual bleeding. Tablets are then taken sequentially without interruption as follows: One white tablet daily for 21 days, then one green (inactive) tablet daily for 7 days. For all subsequent cycles, the patient then begins a new 28- tablet regimen on the next day after taking the last green (inactive) tablet. [If switching directly from another oral contraceptive, the first white tablet should be taken on the same day that a new pack of the previous oral contraceptive would have been started.]
If a patient misses 1 white tablet, she should take the missed tablet as soon as she remembers. If the patient misses 2 consecutive white tablets in Week 1 or Week 2, the patient should take 2 tablets the day she remembers and 2 tablets the next day; thereafter, the patient should resume taking 1 tablet daily until she finishes the cycle pack. The patient should be instructed to use a back-up method of birth control (such as condoms or spermicide) if she has intercourse in the 7 days after she restarts her pills. If the patient misses 2 consecutive white tablets in the third week or misses 3 or more white tablets in a row at any time during the cycle, the patient should throw out the rest of that cycle pack and start a new cycle pack that same day. The patient should be instructed to use a back-up method of birth control if she has intercourse in the 7 days after restarting her pills.
Complete instructions to facilitate patient counseling on proper pill usage can be found in Detailed or Brief Patient Labeling (“How to Take the Pill” section).
Additional Instructions For Both Sunday And Day 1 Starts
If Spotting or Breakthrough Bleeding Occurs
Breakthrough bleeding, spotting, and amenorrhea are frequent reasons for patients discontinuing oral contraceptives. In breakthrough bleeding, as in all cases of irregular bleeding from the vagina, non-functional causes should be considered. In undiagnosed persistent or recurrent abnormal bleeding from the vagina, adequate diagnostic measures are indicated to rule out pregnancy or malignancy. If both pregnancy and pathology have been excluded, time or a change to another preparation may solve the problem. Changing to an oral contraceptive with a higher estrogen content, while potentially useful in minimizing menstrual irregularity, should be done only if necessary since this may increase the risk of thromboembolic disease.
Use of DESOGEN® in the Event of a Missed Menstrual Period
1. If the patient has not adhered to the prescribed schedule, the possibility of pregnancy should be considered at the time of the first missed period and DESOGEN® Tablets (desogestrel and ethinyl estradiol tablets USP) use should be discontinued if pregnancy is confirmed.
2. If the patient has adhered to the prescribed regimen and misses two consecutive periods, pregnancy should be ruled out. DESOGEN® should be discontinued if pregnancy is confirmed.
Use of DESOGEN® Postpartum
The use of DESOGEN® Tablets (desogestrel and ethinyl estradiol tablets USP) for contraception may be initiated 4 to 6 weeks postpartum in women who elect not to breast-feed. When the tablets are administered during the postpartum period, the increased risk of thromboembolic disease associated with the postpartum period must be considered (see CONTRAINDICATIONS and WARNINGS concerning thromboembolic disease. See also PRECAUTIONS for “Nursing Mothers”).
If the patient starts on DESOGEN® postpartum, and has not yet had a period, she should be instructed to use another method of contraception until a white tablet has been taken daily for 7 consecutive days.
DESOGEN® Tablets (desogestrel and ethinyl estradiol tablets USP) contains 21 round white tablets and 7 round green tablets in a blister card. Each white tablet (debossed with “T5R” on one side and “Organon” on the other side) contains 0.15 mg desogestrel and 0.03 mg ethinyl estradiol. Each green tablet (debossed with “K2H” on one side and “Organon” on the other side) contains inert ingredients.
Box of 6 NDC 0052-0261-06
Box of 1 NDC 0052-0261-08
Store below 30°C (86°F).
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Active tablets manufactured by: Organon (Ireland) Ltd., Swords, Co. Dublin, Ireland Inert tablets manufactured by: N.V. Organon, Oss, The Netherlands For patent information: www.merck.com/product/patent/home.html. The entities above are all subsidiaries of Merck & Co., Inc., Whitehouse Station, NJ 08889, USA. Manufactured for: Merck Sharp & Dohme Corp., a subsidiary of MERCK & CO., INC., Whitehouse Station, NJ 08889, USA. Revised: Jun 2014This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 12/14/2015
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