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'''Progestogen-only contraception''' refers to contraceptive methods that use progestogen hormones to prevent pregnancy. Unlike combined hormonal contraceptives, which contain both estrogen and progestogen, progestogen-only contraceptives (POCs) do not include estrogen, making them suitable for individuals who cannot take estrogen for health reasons. POCs come in various forms, including [[oral contraceptives]], [[injectable contraceptives]], [[implantable contraceptives]], and the [[intrauterine device]] (IUD) that releases progestogen.

==Mechanism of Action==
The primary mechanism by which progestogen-only contraceptives prevent pregnancy is by thickening the cervical mucus, making it difficult for sperm to enter the uterus. Additionally, these contraceptives can suppress ovulation in some users, depending on the type and dosage of progestogen. The thinning of the endometrial lining is another effect, which reduces the likelihood of implantation should fertilization occur.

==Types of Progestogen-only Contraceptives==
===Oral Contraceptives===
[[Oral contraceptives]], also known as the mini-pill, contain a low dose of progestogen. They must be taken at the same time every day to maintain their effectiveness.

===Injectable Contraceptives===
[[Injectable contraceptives]], such as Depo-Provera, provide protection against pregnancy for three months through an injection of the hormone depot medroxyprogesterone acetate.

===Implantable Contraceptives===
[[Implantable contraceptives]] involve the placement of a small rod under the skin of the arm, which releases progestogen over a period of three to five years.

===Intrauterine Devices===
The [[intrauterine device]] (IUD) that releases progestogen, such as the Mirena, is inserted into the uterus and can prevent pregnancy for up to five years.

==Advantages and Disadvantages==
Progestogen-only contraceptives offer several advantages, including suitability for individuals who are breastfeeding or who have contraindications to estrogen. They are also associated with a reduced risk of certain types of cancer, such as endometrial cancer. However, POCs may cause irregular menstrual bleeding patterns, and some forms require strict adherence to a daily schedule or regular healthcare visits for injections or implant replacement.

==Considerations==
Choosing the right contraceptive method involves considering various factors, including health history, lifestyle, and personal preferences. It is essential to consult with a healthcare provider to discuss the most suitable options based on individual needs and circumstances.

==See Also==
* [[Birth control]]
* [[Estrogen]]
* [[Family planning]]
* [[Hormonal contraception]]

[[Category:Contraception]]
[[Category:Gynecology]]
[[Category:Pharmacology]]
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Progestogen-only contraception - Revision history

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