What to know about the Nexplanon drug

Etonogestrel is a synthetic form of the hormone progestogen. In the implant, it is released gradually and mainly works by stopping ovulation. It also thickens cervical mucus and changes the lining of the womb. Those hormone effects can alter bleeding patterns; spotting, irregular bleeding, lighter bleeding, or no bleeding may occur. A bleeding change does not by itself show whether the implant is working, so discuss troublesome or unexpected changes with a clinician.

Give your clinician a complete list of medicines, herbal products, and supplements. Some medicines can change how hormonal contraception works, so you may need a different option or additional protection. Mention liver disease, unexplained vaginal bleeding, previous blood clots, and any history of hormone-sensitive illness. Do not stop prescribed medicine without medical advice. The implant rod is described in Etonogestrel Implant Rod, and a non-implant option is Hormonal Coil.

Seek urgent care for severe lower abdominal pain, fainting, heavy bleeding, chest pain, sudden breathlessness, coughing blood, or a painful swollen leg. Contact your clinician for persistent severe headache, vision changes, jaundice, significant mood changes, or a painful infected insertion site. If you think you may be pregnant, arrange medical review promptly, especially with one-sided abdominal pain or dizziness.

Ask whether your current medicines interact with etonogestrel, what bleeding pattern to expect, which symptoms need urgent help, and whether this implant or another contraceptive suits your health history.