General Practice & Specialist Medicine

Latest News
& Current Issues

  • The Evolution of Sex

    Are modern relationships shaped by the romantic notion of love and fidelity or much greater evolutionary urges?
    ... View Full Article

  • Medical web searchers can "trigger anxiety"

    Playing doctor on the web often leads people to mistakenly believe that they are suffering from rare illnesses, US researchers say... View full article

View all News

Join our mailing list

  • Email*


What is Implanon?

Implanon is a small rod (the size of a match)of slow release progesterone that is deposited underneath the skin as a form of female contraception.

What is in Implanon?

Implanon contains one hormone called progesterone. The type of progesterone is called etonogestral.

How does it work?

Implanon works primarily as a contraceptive by inhibiting ovulation. It also can change the thickness of the cervical mucus to prevent sperm from passing through the cervix.

How effective is Implanon?

Implanon is more than 99% effectively.

How long does it last?

Three years.

How is the Implanon inserted?

Implanon is inserted by a doctor along the inside of the left upper arm. Local anaesthetic is used before the insertion. A special type of insertion needle is used to insert the device under the skin. The implant can be felt in the skin afterward. It is inserted in the first 5 days of a period.

How is Implanon removed?

Implanon is removed by anaesthetising the area and making a small cut to pull out the implant.

How long does it take to work?

There is immediate contraceptive effect if inserted in the first 5 days of the cycle. If inserted at any other time addition contraception must be used for 7 days.

What are the side effects?

There are a range of side effects. These can include the following;

  • Bleeding patterns usually change and bleeding may stop, become heavy, be irregular
  • Acne (but this might improve too)
  • Headache
  • Abdominal pain
  • Breat pain
  • Mood changes
  • Decreased libido
  • Hair loss
  • Potential weight gain

What should I do if I have heavy bleeding?

There are a few options for trying to regulate heavy or annoying bleeding whilst on Implanon. You should talk to a doctor about this.
What are the risks associated with Implanon?
There are few risks associated with Implanon.

Are there any medical conditions that would prevent me from having Implanon?

There are a few medical conditions that represent contra-indications to using Implanon. Some of these include;
  • Pregnancy
  • Serious reaction to a COC
  •  Recent breast cancer
  • Acute porphyria
  • Undiagnosed genital tract bleeding
  • Allergy to any component
All of the information contained in this leaflet is designed to provide basic level education. It does not represent medical advice and no action should be taken as a result of the information contained within without discussing it with a doctor. Medical information changes rapidly and this content may be out of date and therefore incorrect. The content has been written with the intention of helping those who read it and specific medical terminology, complex and detailed information has been purposefully omitted. The author holds no responsibility for any action taken as a result of reading this information. The content of this leaflet remains the property of Two One Five Melbourne Street Medical Practice and any usage, apart from personal use, must receive the authority of the owner.
©2016 Two One Five Melbourne Street Medical Practice