Examples
| Generic Name | Brand Name |
|---|
| Combination birth control pills with both estrogen and progestin | Alesse, Loestrin, Marvelon, Ortho 7/7/7, Ortho Tri-Cyclen, Triphasil, Yasmin |
One tablet is taken daily for 20 to 21 days, followed by 7 to 8
days of no medication, during which time there is a
menstrual period.
How It Works
Estrogen and progestin birth control pills prevent
ovulation.
Functional ovarian cysts do not form without
ovulation.
Why It Is Used
Birth control pills can be used to treat women who have recurrent
ovarian cysts with their menstrual cycles.
How Well It Works
Women who use high-dose
estrogen and
progestin birth control pills have a modestly
decreased risk of developing functional ovarian cysts. Low-dose birth control
pills seem to have a less preventive effect.1
Experts disagree about the use of birth control pills to shrink and
eliminate ovarian cysts that have already formed. Some studies show that the
cysts shrink at the same rate with or without birth control pill use.2
Side Effects
Combination hormonal pills contain a combination of estrogen and
progestin. The pill causes hormone levels to peak and drop each day.
Common side effects of combination hormonal pills
The most common side effects are changes in menstrual periods,
including:
- Very light or
skipped periods.
- Bleeding between periods
(spotting), which usually decreases after using a hormonal method for 3 to 4
months.
Less common side effects of combination hormonal pills
Less common side effects include:
- Nausea and vomiting, especially during the
first month of use. This side effect usually goes away after the first few
months of use.
- Frequent or more severe headaches.
Migraine headaches may get worse.
- Weight
gain.
- Breast tenderness for the first few months.
- Depression or mood changes.
- Darkening of
the skin on the upper lip, under the eyes, or on the forehead (chloasma). This
may slowly fade after you stop using hormonal methods, but in some cases, it is
permanent.
- Less interest in sex.
Rare but serious side effects of combination hormonal pills
The following symptoms, called ACHES, are
rare but serious and should be reported to your health professional
immediately.
- Abdominal pain that is
severe or persists may be a sign of blood clots (thrombophlebitis) in the pelvis, liver blood clots or
tumours, or gallbladder disease.
- Chest pain
may be a sign of blood clots in the lungs (pulmonary
embolism),
heart attack, or heart disease. Smoking increases this
risk.
- Headaches that are severe may be a
sign of
stroke,
migraine, or
hypertension. Smoking increases this risk.
- Eye problems, such as blurred vision or
loss of vision, may be a sign of migraine, blood clots in the eye, or a change
in the shape of the
cornea.
- Severe leg
pain or sudden swelling of one leg may be a sign of leg blood clots (thrombophlebitis) or deep vein thrombosis (DVT).
See Drug Reference for a full list of side effects. (Drug Reference
is not available in all systems.)
What To Think About
Cancer protection, cancer risk? Recent
studies have shown that using the Pill (with estrogen and progestin) for a year
or more helps protect against uterine cancer. Long-term Pill use protects
against ovarian cancer. However, the research is mixed about breast
cancer.3, 4 Breast cancer risk
may be slightly increased by the Pill for women with a family history of breast
cancer.5 Women who have a personal history of breast
cancer should not take the Pill. If you're considering hormonal birth control,
let your health professional know if you have any family history of breast
cancer.
Combined hormonal contraceptive pills are usually not prescribed
for women who:
- Smoke and are older than 35.
- Have
diabetes and are older than 35 or have diabetes with
complications.
- Have migraines with visual changes (aura).
- Have a risk for blood clots, including a family history of clots
or a past clot in the lung (pulmonary embolism) or leg
(thrombophlebitis).
- Have
coronary artery disease, uncontrolled high blood
pressure, or high
triglyceride levels.
Other factors to consider include the following:
- Birth control pills may not be as effective
when combined with
other medications. Be sure to tell your health
professional or pharmacist that you are taking birth control pills whenever you
get a new prescription. The herbal medication
St. John's wort also makes birth control pills less
effective. Be sure to tell your health professional about all
medications and supplements you are taking when starting hormonal birth
control.6
- After stopping high-dose birth
control pill use in order to start a planned pregnancy, it may take longer to
become pregnant than after stopping use of a low-dose pill, diaphragm, or
intrauterine device (IUD).7
- If you are
taking birth control pills,
take
special precautions for backup birth control if you miss or skip
pills.
- Birth control pills may not be as effective if you
are vomiting or have diarrhea. Use another method of birth control for 7 days
after vomiting or diarrhea, even if you have not missed any pills.
- The pill may not work as well if you are overweight (body mass index
greater than 30).8, 9 If you
are overweight, ask your doctor about which birth control methods are right for
you.
Be sure to use a backup birth control method during the first 7
days of starting hormonal contraception.
Emergency contraception is available if any birth
control method fails and you are concerned about unprotected sex.
Complete the
new medication information form (PDF)
(What is a PDF document?)
to help you understand this medication.