The Contraceptive Implant, or Implanon

Implanon has been available in the UK since 1999. Another brand, Norplant, was withdrawn in 2001. All Norplant implants should now have been removed, if you still have one, then make an appointment to have it taken out.

What is it?
A hormone-impregnanted matchstick-sized implant, which is inserted by a trained doctor under the skin, just above the elbow. It is 2mm wide and 4cm long and releases female hormones directly into your bloodstream which prevent your ovaries from releasing eggs and cause changes to the womb and cervix to prevent pregnancy.

Who is it for?
The implant was developed for women who can't use the coil or take the pill. It only contains progesterone-type hormones, rather then the oestrogen which is also found in many contraceptive pills. Anyone with a history of ovarian cysts should avoid the implant, and heavier women may find that it does not release enough hormone to prevent pregnancy.

How is it put in?
During the first five days of your period, a trained doctor will insert the implant under your skin with a special tool, under local aneasthetic. It is usually put in on the inside of the left arm for right-handed women, or the right arm for the left-handed. It remains effective for three years and should only be taken out or replaced by a trained medical professional