Some of these are beneficial for many women e. One highly effective contraceptive option is the Implanon contraceptive implant. The Implanon offers a long-term contraceptive solution, however there are side effects many women experience, including changes to bleeding patterns. Implanon a soft, plastic stick which is inserted by your doctor under the skin of the inside surface of the upper arm. It slowly releases the hormone progestogen into the body.
The implant is 4cm in length and may be felt once inserted but not obviously seen, it remains in place for up to three years before being removed and replaced if desired. The implant is injected following the use of a local anaesthetic, so its insertion and removal is virtually painless.
Progestogen is a synthetic hormone that mimics progesterone, a natural female hormone that is produced in the ovaries, adrenal glands, and placenta when a woman is pregnant. It helps prepare the body for conception and helps to maintain a pregnancy.
It also, alongside oestrogen, regulates the natural menstrual cycle. Effects of Hormonal Contraceptives on Other Drugs. Clinical Data Close Menu. Clinical Data Bleeding pattern changes. Selected Safety Information. Undetected failure to insert the implant may lead to an unintended pregnancy. Failure to remove the implant may result in continued effects of etonogestrel, such as compromised fertility, ectopic pregnancy, or persistence or occurrence of a drug-related adverse event.
Complications related to insertion and removal procedures, such as pain, paresthesias, bleeding, hematoma, scarring, or infection, may occur. Implant removal may be difficult or impossible if the implant is not inserted correctly, inserted too deeply, not palpable, encased in fibrous tissue, or has migrated.
If at any time the implant cannot be palpated, it should be localized and removal is recommended. There have been postmarketing reports of implants located within the vessels of the arm and the pulmonary artery, which may be related to deep insertions or intravascular insertions.
Endovascular or surgical procedures may be needed for removal. These may include changes in frequency, intensity, or duration. Abnormal bleeding should be evaluated as needed to exclude pathologic conditions or pregnancy. In clinical studies of the non-radiopaque etonogestrel implant, reports of changes in bleeding pattern were the most common reason for stopping treatment Women should be counseled regarding bleeding pattern changes that they may experience.
Thrombotic and Other Vascular Events The use of combination hormonal contraceptives increases the risk of vascular events, including arterial events strokes and myocardial infarctions or deep venous thrombotic events venous thromboembolism, deep venous thrombosis, retinal vein thrombosis, and pulmonary embolism.
It is recommended that women with risk factors known to increase the risk of venous and arterial thromboembolism be carefully assessed. Occasionally the implant can be difficult to feel or remove and you may need to have an ultrasound to check its position in your arm. Irregular bleeding is a common side effect and will usually settle down within 3 months.
Whatever your bleeding pattern, the implant is still effective. If the bleeding does not settle or you are unhappy with the bleeding you can see a doctor for medications that can help with this. People who are pregnant, people with breast cancer, people with unexplained vaginal bleeding, people with severe liver disease or using medication that affects the liver, should not use the implant.
The implant is prescribed by a doctor and can be inserted at SHINE SA clinics and by doctors, nurses and gynaecologists who have been trained in this procedure.
For You For Professionals. Search for:. Contraceptive Implant Implanon. Download PDF. This resource is only available for free to organisations in SA Australia, due to funding requirements.
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