The progesterone-only birth control pill is a contraceptive pill that is made-up of a very low dose of progesterone. It is often prescribed os a contraceptive method for women who are breastfeeding, as it does not interfere with breastmilk quantity and quality.
Progesterone-only birth control, also referred to as the mini-pill, can also be prescribed for women with conditions that are contraindicated for estrogen-containing birth control, like obesity, smoking history, high blood pressure or a high risk of cardiovascular disease.
A progesterone-only birth control pill should be prescribed by a doctor, after thorough assessment to ensure the woman is an ideal candidate for it.
Why it's prescribed
The minipill may be indicated for women with the following conditions:
- Actively breastfeeding
- Obesity
- Smokers over 35 years old
- Diabetes
- High-risk for heart disease
- Endometrial and ovarian cancer
Progesterone-only birth control also does not increase the risk of venous thromboembolism like other birth control pills might. Therefore, it may be prescribed for women with a history of deep vein thrombosis or a pulmonary embolism.
How it works
The mini-pill works by interrupting menstruation and preventing ovulation. It also impacts the movement of cervical mucus, making it difficult for sperm or eggs to be transported.
Progesterone-only birth control is mainly indicated for women who breastfeed, as it complements the action of prolactin, a hormone that is produced during breastfeeding and has a small contraceptive effect.
Difference between birth control pill and minipill
Birth control pills are usually made-up of both estrogen and progesterone, which work together to inhibit ovulation and prevent pregnancy. However, this type of birth control is not recommended for breastfeeding women, smokers over 35 years of age, those with high blood pressure, cardiovascular diseases, obesity, or a history of pulmonary emobilisms or DVTs.
The progesterone-only birth control pill can still reduces the risk of pregnancy, however it can be used in women who are breastfeeding, or have a history of obesity, diabetes, thrombophilia and thrombosis. It can also be taken by smokers over 35 years of age, or women who have a high risk of heart disease or a history of thrombosis or embolism pulmonary.
Possible side effects
Possible side effects of progesterone-only birth control include irregular periods, headache, acne, nausea, breast tenderness, slight weight gain, dizziness and mood swings.
Contraindications for use
Progesterone-only birth control is not recommended for women who are allergic to any of the components in its formula, nor should it be taken in cases of pregnancy or suspected pregnancy.
It is also not recommended for women with unexplained vaginal bleeding, breast cancer or severe liver cirrhosis.
Women who are taking anticonvulsants, antibiotics, St. John's wort or antifungals should talk to their doctor before using the minipill, as these medications can reduce of this pill.