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Progestogen-only injectable contraceptives (POICs) are a form of hormonal contraception and progestogen-only contraception that are administered by injection and providing long-lasting birth control. [ 2 ] [ 3 ] As opposed to combined injectable contraceptives , they contain only a progestogen without an estrogen , and include two progestin ...
The most common form of sterilization in dogs and cats is surgical, spaying in females and castration in males. Non-surgical fertility control can either result in sterilization or temporary contraception and could offer a cheaper way to keep wild dog and cat populations under control. As of 2019, only contraceptives are commercially available.
Hormonal contraceptives can come in multiple forms including injectables. Depot medroxyprogesterone acetate (DMPA), a progestin-only injectable, has been found to cause amenorrhea (cessation of menstruation); however, the irregular bleeding pattern returns to normal over time. [15] [16] DMPA has also been associated with weight gain. [16]
Irregular menstrual bleeding and spotting in individuals taking progestogen-only pills, especially in the first months after starting. [ 47 ] [ 48 ] This side effect may be bothersome but is not dangerous, and most users report improved bleeding patterns with longer usage.
A progestogen, also referred to as a progestagen, gestagen, or gestogen, is a type of medication which produces effects similar to those of the natural female sex hormone progesterone in the body. [1] A progestin is a synthetic progestogen. [1] Progestogens are used most commonly in hormonal birth control and menopausal hormone therapy. [1]
Etonogestrel is a progestin, or a synthetic progestogen, and hence is an agonist of the progesterone receptor, the biological target of progestogens like progesterone. [16] It works by stopping ovulation , thickening the mucus around the opening of the cervix , and altering the lining of the uterus . [ 17 ]
Hormonal IUDs have similar side effects to other forms of hormonal contraception, such as combined and progesterone only oral contraceptives. Hormonal IUDs most frequently cause irregular menstrual bleeding. Other side effects include acne, breast tenderness, headaches, nausea, and mood changes. [21] [22]
Progestogen-only pills (POPs) use a progestogen alone with doses taken continuously and no or a short gap between packs taken. People who use them may experience irregular light bleeds, and whilst irregular in the first few months of taking, usually settles to a regular pattern in time. The following progestogens are used: