Do not use IMPLANON if you
Are pregnant or think you may be pregnant
Have, or have had serious blood clots, such as blood clots in your legs (deep venous
thrombosis), lungs (pulmonary embolism), eyes (total or partial blindness), heart (heart
attack), or brain (stroke)
Have liver disease or a liver tumor
Have unexplained vaginal bleeding
Have breast cancer or any other cancer that is sensitive to progestin (a female
hormone), now or in the past
Are allergic to anything in IMPLANON
Tell your health care provider if you have or have had any of the conditions listed above. Your health care provider can suggest a different method of birth control.
In addition, talk to your health care provider about using IMPLANON if you:
Have high cholesterol or triglycerides
Have gallbladder or kidney problems
Have a history of depressed mood
Have high blood pressure
Have an allergy to numbing medicines (anesthetics) or medicines used to clean your skin (antiseptics). These medicines will be used when the implant is placed into or removed from your arm.
Changes in Menstrual Bleeding Patterns (menstrual periods)
The most common side effect of IMPLANON® (etonogestrel implant) is a change in your normal menstrual bleeding pattern. In studies, about 1 out of 10 women stopped using the implant because of an unfavorable change in their bleeding pattern. You may experience longer or shorter bleeding during your periods or have no bleeding at all. The time between periods may vary, and in between periods you may also have spotting.
Talk with your health care provider right away if:
You think you may be pregnant
Your menstrual bleeding is heavy and prolonged
Besides changes in menstrual bleeding patterns, other frequent side effects that caused women to stop using the implant include:
Other common side effects include:
Vaginitis (inflammation of the vagina)
Viral infections such as sore throats or flu-like symptoms
Mood swings, nervousness, or depressed mood
Pain at the site of insertion
In rare cases, implants have been reported to be found in a blood vessel including a blood vessel in the lung.
This is not a complete list of possible side effects. For more information, ask your health care provider for advice about any side effects that concern you.
Problems with Insertion and Removal
The implant may not be placed in your arm at all due to a failed insertion or if the implant has fallen out of the needle. If this happens, you may become pregnant. Immediately after insertion, and with help from your health care provider, you should be able to feel the implant under your skin. If you can’t feel the implant, tell your health care provider.
Location and removal of the implant may be difficult or impossible because the implant is not where it should be. Special procedures, including surgery in the hospital, may be needed to remove the implant. If the implant is not removed, then the effects of IMPLANON will continue for a longer period of time.
In rare cases, implants have been found in the pulmonary artery (a blood vessel in the lung). If the implant cannot be found in the arm, your healthcare professional may use imaging methods on the chest. If the implant is located in the chest, surgery may be needed.
Other problems related to insertion and removal are:
Pain, irritation, swelling, or bruising at the insertion site
Scarring, including a thick scar called a keloid around the insertion site
Scar tissue may form around the implant making it difficult to remove
The implant may come out by itself. You may become pregnant if the implant comes out by itself. Use a back up birth control method and call your health care provider right away if the implant comes out.
The need for surgery in the hospital to remove the implant
Injury to nerves or blood vessels in your arm
The implant breaks making removal difficult
If you become pregnant while using IMPLANON, you have a slightly higher chance that the pregnancy will be ectopic (occurring outside the womb) than do women who do not use birth control. Unusual vaginal bleeding or lower stomach (abdominal) pain may be a sign of ectopic pregnancy. Ectopic pregnancy is a medical emergency that often requires surgery. Ectopic pregnancies can cause serious internal bleeding, infertility, and even death. Call your health care provider right away if you think you are pregnant or have unexplained lower stomach (abdominal) pain.
Cysts may develop on the ovaries and usually go away without treatment but sometimes surgery is needed to remove them.
It is not known whether IMPLANON® (etonogestrel implant) use changes a woman’s risk for breast cancer. If you have breast cancer now, or have had it in the past, do not use IMPLANON because some breast cancers are sensitive to hormones.
Serious Blood Clots
IMPLANON may increase your chance of serious blood clots, especially if you have other risk factors such as smoking. It is possible to die from a problem caused by a blood clot, such as a heart attack or a stroke.
Some examples of serious blood clots are blood clots in the:
The risk of serious blood clots is increased in women who smoke. If you smoke and want to use IMPLANON, you should quit. Your health care provider may be able to help.
Tell your health care provider at least 4 weeks before if you are going to have surgery or will need to be on bed rest. You have an increased chance of getting blood clots during surgery or bed rest.
A few women who use birth control that contains hormones may get:
Broken or Bent Implant
If you feel that the implant may have broken or bent while in your arm, contact your healthcare provider.