Key takeaways
NuvaRing (etonogestrel / ethinyl estradiol) and Mirena (levonorgestrel) are both medications used to prevent pregnancy, but they belong to different drug classes and have distinct methods of administration. NuvaRing is a combined hormonal contraceptive that contains both estrogen and progestin, while Mirena is a progestin-only intrauterine device (IUD). NuvaRing is a flexible plastic ring inserted into the vagina for three weeks, followed by a one-week break, and is available in both brand-name and generic forms. In contrast, Mirena is inserted into the uterus by a healthcare professional and can remain effective for up to eight years. Besides preventing pregnancy, Mirena is also FDA-approved to treat heavy menstrual bleeding for up to five years, which is not an indication for NuvaRing. Common side effects of NuvaRing include headaches and vaginal irritation, while Mirena users may experience changes in menstrual bleeding and pelvic pain. Both medications have specific contraindications and risks, such as blood clots for NuvaRing and ectopic pregnancy for Mirena, so it's important to discuss these with your healthcare team.
