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A contraceptive implant is an implantable medical device used for the purpose of birth control.The implant may depend on the timed release of hormones to hinder ovulation or sperm development, the ability of copper to act as a natural spermicide within the uterus, or it may work using a non-hormonal, physical blocking mechanism.
[4] [5] [12] [13] It is available as an implant placed under the skin of the upper arm under the brand names Nexplanon and Implanon. It is a progestin that is also used in combination with ethinylestradiol , an estrogen , as a vaginal ring under the brand names NuvaRing and Circlet . [ 14 ]
Medical professionals raised concerns during a consultation process indicating preference for a product which is easier to insert. The agreement between Bayer New Zealand and Pharmac was conditional on Bayer New Zealand providing adequate training to ensure doctors are comfortable in the insertion and removal technique.
Effectiveness of contraceptive methods with respect to birth control. Only condoms are useful to prevent sexually transmitted infections.. There are many methods of birth control (or contraception) that vary in requirements, side effects, and effectiveness.
The diaphragm is a barrier method of birth control. [3] It is moderately effective, with a one-year failure rate of around 12% with typical use. [4] It is placed over the cervix with spermicide before sex and left in place for at least six hours after sex.
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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]
In general, pregnane derivatives (e.g., progesterone, dydrogesterone, hydroxyprogesterone caproate, medroxyprogesterone acetate, megestrol acetate) do not virilize even in high dose; testosterone derivatives (ethisterone) and 19-nortestosterone (norethisterone, norethisterone acetate, etc.) generally virilize, but there are exceptions (e.g., noretynodrel, allylestrenol) that do not.