Insertion<unk>  is<unk> ed under the skin in the upper arm of a woman, by creating a small incision and inserting the capsules in a fanlike shape. Insertion usually takes 15 minutes and the capsules can sometimes be seen under the skin, although usually they look like small veins. They can also be felt under the skin. Once inserted, the contraceptive works within 24 hours and lasts up to five years. Removal<unk>  can be removed by creating a second incision and withdrawing the capsules. It is normally removed when the five-year period is over, or if: * Pregnancy is desired * Different birth control is preferred * Complications arise Normally removal is not complicated; removal difficulties have been reported with a frequency of 6.2%, based on 849 removals. Removal difficulties include: multiple incisions, capsule fragments remaining, pain, multiple visits, deep placement, lengthy removal procedure, or other. If desired, a new<unk>  can be inserted at the time of removal.
Levonorgestrel-releasing implant
High-dose estrogen
Extended cycle combined hormonal contraceptive
Lipoidal estradiol
Male contraceptive
5α-Dihydrolevonorgestrel
Estradiol-containing birth control pill
Cloxestradiol acetate