Implanon (etonogestrel implant) is an implantable birth control device. It is composed of a plastic single rod that contains a form of synthetic progesterone. It is inserted by your physician under the skin on the inner side of your upper arm. A local anesthetic is used to minimize discomfort. It is effective for up to three years. Removal is suggested at the three-year mark, when a new Implanon can be inserted in its place.
Irregular Bleeding
One of the most commonly reported side effects of Implanon is irregular bleeding. This might be in the form of spotting during menstrual periods. You might also have more or less bleeding during monthly menstruation. Some women experience irregular menstrual cycles while using Implanon. After several months, your body should get used to the medication and a more normal cycle will resume. For some women, irregularity could last the entire time that they use Implanon.
Headache
Headaches are another common side effect of Implanon. This occurs because of the increase of progesterone in your system. These headaches should most likely subside once your body has the opportunity to get used to the medication. You can treat your headache with acetaminophen or ibuprofen. If your headache worsens, you should seek medical attention.
Weight Gain
Some women experience weight gain on Implanon. To help prevent weight gain, eat a sensible diet and exercise regularly.
Vaginitis
Vaginitis (inflammation of the vagina) can be a side effect of Implanon. If you experience any vaginal swelling, itching, discharge or discomfort, you should see a gynecologist.
Breast Pain
Some women experience breast pain while on Implanon. This is because of the increased progesterone in the body. It might subside after several months. If breast pain becomes severe, or is accompanied by swelling or a hardened area, seek medical care.
