Progestogen-only pill

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Progestogen-only pill (POP) is a type of contraceptive that contains a synthetic version of the hormone progestogen. It is also known as the mini-pill and is different from the combined oral contraceptive pill which contains both progestogen and estrogen.

Mechanism of action

The progestogen-only pill works primarily by thickening the cervical mucus to prevent sperm from reaching an egg. It also thins the lining of the uterus to make it less likely for a fertilized egg to implant and grow. Some types of progestogen-only pill can also stop ovulation.

Effectiveness

The effectiveness of the progestogen-only pill depends on how consistently and correctly it is used. With perfect use, it is over 99% effective at preventing pregnancy. However, with typical use, the effectiveness is around 92%.

Side effects

Common side effects of the progestogen-only pill include menstrual irregularities, mood changes, breast tenderness, and acne. Less common side effects include ovarian cysts, decreased libido, and weight gain.

Contraindications

The progestogen-only pill is not suitable for everyone. It should not be used by women who have breast cancer, liver disease, or a history of stroke or blood clots.

Advantages and disadvantages

The progestogen-only pill has several advantages over other forms of contraception. It can be used by women who cannot take estrogen, such as those who are breastfeeding or have a history of migraine with aura. It also does not interfere with sex and can be stopped at any time.

However, the progestogen-only pill also has some disadvantages. It must be taken at the same time every day to be effective, and it does not protect against sexually transmitted infections.

See also

This article is a medical stub. You can help WikiMD by expanding it!
PubMed
Wikipedia
  • Progesterone structure
    Progesterone structure
  • Norgestrel structure
    Norgestrel structure

Progestogen-only pill

  • Progesterone chemical structure
    Progesterone chemical structure
  • Norgestrel chemical structure
    Norgestrel chemical structure
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