May 26, 2017
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Included as part of the PRECAUTIONS section.


Thrombotic Disorders And Other Vascular Problems

  • Stop SEASONALE if an arterial thrombotic event or venous thromboembolic (VTE) event occurs.
  • Stop SEASONALE if there is unexplained loss of vision, proptosis, diplopia, papilledema, or retinal vascular lesions. Evaluate for retinal vein thrombosis immediately.
  • If feasible, stop SEASONALE at least 4 weeks before and through 2 weeks after major surgery or other surgeries known to have an elevated risk of VTE as well as during and following prolonged immobilization.
  • Start SEASONALE no earlier than 4 weeks after delivery, in women who are not breastfeeding. The risk of postpartum VTE decreases after the third postpartum week, whereas the risk of ovulation increases after the third postpartum week.
  • The use of COCs increases the risk of VTE. However, pregnancy increases the risk of VTE as much or more than the use of COCs. The risk of VTE in women using COCs is 3 to 9 cases per 10,000 woman-years. The risk of VTE is highest during the first year of use of COCs and when restarting hormonal contraception after a break of 4 weeks or longer. The risk of thromboembolic disease due to COCs gradually disappears after use is discontinued.
  • Use of SEASONALE provides women with more hormonal exposure on a yearly basis than conventional monthly COCs containing the same strength synthetic estrogens and progestins (an additional 9 weeks of exposure per year). In the clinical trial, one case of pulmonary embolism was reported. Postmarketing adverse reactions of VTE have been reported in women who used SEASONALE.
  • Use of COCs also increases the risk of arterial thromboses such as strokes and myocardial infarctions, especially in women with other risk factors for these events. Stroke has been reported in women associated with the use of SEASONALE. COCs have been shown to increase both the relative and attributable risks of cerebrovascular events (thrombotic and hemorrhagic strokes). This risk increases with age, particularly in women over 35 years of age who smoke.
  • Use COCs with caution in women with cardiovascular disease risk factors.

Liver Disease

Impaired Liver Function

Do not use SEASONALE in women with liver disease, such as acute viral hepatitis or severe (decompensated) cirrhosis of the liver [see CONTRAINDICATIONS]. Acute or chronic disturbances of liver function may necessitate the discontinuation of COC use until markers of liver function return to normal and COC causation has been excluded. Discontinue SEASONALE if jaundice develops.

Liver Tumors

SEASONALE is contraindicated in women with benign and malignant liver tumors [see CONTRAINDICATIONS]. Hepatic adenomas are associated with COC use. An estimate of the attributable risk is 3.3 cases/100,000 COC users. Rupture of hepatic adenomas may cause death through intra-abdominal hemorrhage.

Studies have shown an increased risk of developing hepatocellular carcinoma in long-term ( > 8 years) COC users. However, the attributable risk of liver cancers in COC users is less than one case per million users.

High Blood Pressure

SEASONALE is contraindicated in women with uncontrolled hypertension or hypertension with vascular disease [see CONTRAINDICATIONS]. For women with well-controlled hypertension, monitor blood pressure and stop SEASONALE if blood pressure rises significantly.

An increase in blood pressure has been reported in women taking COCs, and this increase is more likely in older women and with extended duration of use. The incidence of hypertension increases with increasing concentration of progestin.

Gallbladder Disease

Studies suggest a small increased relative risk of developing gallbladder disease among COC users. Use of COCs may worsen existing gallbladder disease.

A past history of COC-related cholestasis predicts an increased risk with subsequent COC use. Women with a history of pregnancy-related cholestasis may be at an increased risk for COC-related cholestasis.

Carbohydrate And Lipid Metabolic Effects

Carefully monitor prediabetic and diabetic women who are taking SEASONALE. COCs may decrease glucose tolerance.

Consider alternative contraception for women with uncontrolled dyslipidemia. A small proportion of women will have adverse lipid changes while on COCs.

Women with hypertriglyceridemia, or a family history thereof, may be at an increased risk of pancreatitis when using COCs.


If a woman taking SEASONALE develops new headaches that are recurrent, persistent, or severe, evaluate the cause and discontinue SEASONALE if indicated.

Consider discontinuation of SEASONALE in the case of increased frequency or severity of migraine during COC use (which may be prodromal of a cerebrovascular event) [see CONTRAINDICATIONS].

Bleeding Irregularities And Amenorrhea

Bleeding and/or spotting that occurs at any time while taking the first 84 tablets of each extended-cycle regimen is considered “unscheduled” bleeding/spotting. Bleeding that occurs during the time a woman takes the seven white inert tablets is considered “scheduled” bleeding.

Unscheduled And Scheduled Bleeding And Spotting

Unscheduled (breakthrough) bleeding and spotting sometimes occur in patients on COCs, especially during the first 3 months of use. If unscheduled bleeding persists or occurs after previously regular cycles on SEASONALE, check for causes such as pregnancy or malignancy. If pathology and pregnancy are excluded, bleeding irregularities may resolve over time or with a change to a different COC.

Before prescribing SEASONALE, advise the woman to weigh the convenience of fewer scheduled menses (4 per year instead of 13 per year) against the inconvenience of increased unscheduled bleeding and/or spotting.

The clinical trial of the efficacy of SEASONALE (91-day cycles) in preventing pregnancy also assessed scheduled and unscheduled bleeding. The participants in the study were composed primarily of women who had used oral contraceptives previously as opposed to new users. Women with a history of breakthrough bleeding/spotting ≥ 10 consecutive days on oral contraceptives were excluded from the study. More SEASONALE subjects, compared to subjects on the comparator 28-day cycle regimen, discontinued prematurely for unacceptable bleeding (7.7% [SEASONALE] vs. 1.8% [28-day cycle regimen]).

Unscheduled bleeding and unscheduled spotting decreased over successive 91-day cycles. Table 3 below presents the number of days with unscheduled bleeding and/or spotting for each respective 91-day cycle.

Table 3: Number of Unscheduled Bleeding and/or Spotting Days per 91-day Cycle

Cycle (N) Days of Unscheduled Bleeding and/or Spotting per 84-Day Interval Median Days Per Subject-Month
Mean Q1 Median Q3
1 (446) 15.1 3.0 12 23.0 3.0
2 (368) 11.6 2.0 6 17.5 1.5
3 (309) 10.6 1.0 6 15.0 1.5
4(282) 8.8 1.0 4 14.0 1.0
Q1=Quartile 1: 25% of women had ≤ this number of days of unscheduled bleeding/spotting Median: 50% of women had ≤ this number of days of unscheduled bleeding/spotting Q3=Quartile 3: 75% of women had ≤ this number of days of unscheduled bleeding/spotting

Table 4 shows the percentages of women with ≥ 7 days and ≥ 20 days of unscheduled spotting and/or bleeding in the SEASONALE and the 28-day cycle treatment groups.

Table 4: Percentage of Subjects with Unscheduled Bleeding and/or Spotting

Days of unscheduled bleeding and/or spotting Percentage of Subjects a
SEASONALE Cycle 1 (N=385) Cycle 4
≥ 7 days 65% 42%
≥ 20 days 35% 15%
28-day regimen Cycles 1-4 (N=194) Cycles 10-13 (N=158)
≥ 7 days 38% 39%
≥ 20 days 6% 4%
a Based on spotting and/or bleeding on days 1-84 of a 91 day cycle in the SEASONALE subjects and days 1-21 of a 28 day cycle over 4 cycles in the 28-day dosing regimen.

Total days of bleeding and/or spotting (scheduled plus unscheduled) were similar over one year of treatment for SEASONALE subjects and subjects on the 28-day cycle regimen.

Amenorrhea And Oligomenorrhea

Women who are not pregnant and use SEASONALE may experience amenorrhea. Based on data from the clinical trial, amenorrhea occurred in approximately 0.8% of women during Cycle 1, 1.2% of women during Cycle 2, 3.7% of women during Cycle 3, and 3.4% of women during Cycle 4. Because women using SEASONALE will likely have scheduled bleeding only 4 times per year, rule out pregnancy at the time of any missed menstrual period.

Some women may experience amenorrhea or oligomenorrhea after stopping COCs, especially when such a condition was pre-existent.

COC Use Before Or During Early Pregnancy

Extensive epidemiological studies have revealed no increased risk of birth defects in women who have used oral contraceptives prior to pregnancy. Studies also do not suggest a teratogenic effect, particularly in so far as cardiac anomalies and limb-reduction defects are concerned, when oral contraceptives are taken inadvertently during early pregnancy. Discontinue SEASONALE use if pregnancy is confirmed.

Administration of oral contraceptives to induce withdrawal bleeding should not be used as a test for pregnancy [see Use in Specific Populations].


Depression associated with the use of SEASONALE has been reported. Carefully observe women with a history of depression and discontinue SEASONALE if severe depression recurs.

Carcinoma Of The Breast And Cervix

  • SEASONALE is contraindicated in women who currently have or have had breast cancer because breast cancer may be hormonally sensitive [see CONTRAINDICATIONS].
    There is substantial evidence that COCs do not increase the incidence of breast cancer. Although some past studies have suggested that COCs might increase the incidence of breast cancer, more recent studies have not confirmed such findings.
  • Some studies suggest that COC use has been associated with an increase in the risk of cervical cancer or intraepithelial neoplasia. However, there continues to be controversy about the extent to which such findings may be due to differences in sexual behavior and other factors.

Effect On Binding Globulins

The estrogen component of COCs may raise the serum concentrations of thyroxine-binding globulin, sex hormone-binding globulin and cortisol-binding globulin. The dose of replacement thyroid hormone or cortisol therapy may need to be increased.


A woman who is taking COCs should have a yearly visit with her healthcare provider for a blood pressure check and for other indicated health care.

Hereditary Angioedema

In women with hereditary angioedema, exogenous estrogens may induce or exacerbate symptoms of angioedema.


Chloasma may occasionally occur, especially in women with a history of chloasma gravidarum. Women with a tendency to develop chloasma should avoid prolonged exposure to the sun or ultraviolet radiation while taking SEASONALE.

Patient Counseling Information

See FDA-approved patient labeling (PATIENT INFORMATION and Instructions for Use).

  • Counsel patients on the following information:
  • Cigarette smoking increases the risk of serious cardiovascular events from COC use, and that women who are over 35 years old and smoke should not use COCs [see BOXED WARNING].
  • Increased risk of VTE compared to non-users of COCs is greatest after initially starting a COC or restarting (following a 4-week or greater pill-free interval) the same or a different COC [see WARNINGS AND PRECAUTIONS].
  • SEASONALE does not protect against HIV-infection (AIDS) and other sexually transmitted infections.
  • SEASONALE is not to be used during pregnancy; if pregnancy occurs during use of SEASONALE, instruct the patient to stop further use [see WARNINGS AND PRECAUTIONS].
  • Take one tablet daily by mouth at the same time every day. Instruct patients what to do in the event tablets are missed [see DOSAGE AND ADMINISTRATION].
  • Use a back-up or alternative method of contraception when enzyme inducers are used with SEASONALE [see DRUG INTERACTIONS].
  • COCs may reduce breast milk production; this is less likely to occur if breastfeeding is well established [see Use in Specific Populations].
  • Women who start on COCs postpartum, and who have not yet had a period, should use an additional method of contraception until they have taken a pink tablet for 7 consecutive days [see DOSAGE AND ADMINISTRATION].
  • Amenorrhea may occur. Because women using SEASONALE will likely have scheduled bleeding only 4 times per year, rule out pregnancy at the time of any missed menstrual period [see WARNINGS AND PRECAUTIONS].

Nonclinical Toxicology

Carcinogenesis, Mutagenesis, Impairment Of Fertility

[see WARNINGS AND PRECAUTIONS and Use in Specific Populations].

Use In Specific Populations


There is little or no increased risk of birth defects in women who inadvertently use COCs during early pregnancy. Epidemiologic studies and meta-analyses have not found an increased risk of genital or non-genital birth defects (including cardiac anomalies and limb-reduction defects) following exposure to low dose COCs prior to conception or during early pregnancy.

Do not administer COCs to induce withdrawal bleeding as a test for pregnancy. Do not use COCs during pregnancy to treat threatened or habitual abortion.

Nursing Mothers

Advise the nursing mother to use other forms of contraception, when possible, until she has weaned her child. COCs can reduce milk production in breastfeeding mothers. This is less likely to occur once breastfeeding is well established; however, it can occur at any time in some women. Small amounts of oral contraceptive steroids and/or metabolites are present in breast milk.

Pediatric Use

Safety and efficacy of SEASONALE have been established in women of reproductive age. Efficacy is expected to be the same for postpubertal adolescents under the age of 18 as for users 18 years and older. Use of SEASONALE before menarche is not indicated.

Geriatric Use

SEASONALE has not been studied in postmenopausal women and is not indicated in this population.

Hepatic Impairment

The pharmacokinetics of SEASONALE have not been studied in subjects with hepatic impairment. However, steroid hormones may be poorly metabolized in patients with hepatic impairment. Acute or chronic disturbances of liver function may necessitate the discontinuation of COC use until markers of liver function return to normal and COC causation has been excluded [see CONTRAINDICATIONS and WARNINGS AND PRECAUTIONS].

Renal Impairment

The pharmacokinetics of SEASONALE have not been studied in women with renal impairment.

This monograph has been modified to include the generic and brand name in many instances.

Last reviewed on RxList: 4/19/2017


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