Why are they used?
Birth control hormones relieve
endometriosis by stopping
ovulation and reducing the
endometrium's monthly cycle of growing, shedding, and
bleeding. They also affect the endometriosis growths (implants), making them
shrink and bleed less.1 Birth control hormones can
also be used to stop or further slow endometriosis growths after endometriosis
surgery.
You can get birth control hormones as a pill you take by mouth
every day, as a weekly hormone skin patch, or as a monthly vaginal ring.
Birth control hormones are the first-choice treatment for
controlling endometriosis growth and pain. This is because birth control
hormones are the hormone therapy that is least likely to cause bad side
effects. For this reason, they can be used for years. Other hormone therapies
can only be used for several months to 2 years.
How well do they work?
Like all hormone therapies and surgery, birth control hormones do
not cure endometriosis. But they can relieve endometriosis symptoms and are
likely to slow the growth of endometriosis.
Birth control hormones improve endometriosis and menstrual pain and
bleeding for most women.2 They are most effective
when used to relieve minimal to mild symptoms.
Continuous use of birth control pills is likely to give the most
relief.3 About one-third of women who take regular
28-day cycles have pain during the fourth, hormone-free week.
Birth control hormones can be used with
non-steroidal anti-inflammatory drug (NSAID) therapy,
which helps further reduce endometriosis inflammation and pain-causing
prostaglandins.
What else should I know?
Using birth control hormones for 5 or more years lowers ovarian
cancer risk (endometriosis increases ovarian cancer risk).4
Birth control hormones cannot be used to treat
infertility caused by endometriosis. They prevent
pregnancy.