ImportantThis page is general information, not a prescription. Don't start, stop, or change a medicine without talking to your provider or pharmacist.
Overview
NuvaRing is replaced monthly; Annovera is reused for a year.
What it's used for
- Preventing pregnancy
How to take it
- Insert the ring yourself and leave it in for 3 weeks, then remove for 1 week (follow your product's schedule).
- If it's out for more than 3 hours, follow the backup instructions.
Your dose depends on your health and other medicines. Always follow your prescription label, and ask your pharmacist if anything is unclear.
Side effects
Common side effects
- Irregular bleeding
- Headache
- Vaginal discharge or irritation
- Nausea
Call 911Chest pain, sudden shortness of breath, or signs of a stroke
Call your provider todayPain or swelling in one leg
Call 911High fever, vomiting, and a sunburn-like rash (rare toxic shock)
Warnings
- Boxed warning: smoking raises the risk of serious heart and blood vessel problems, especially over 35.
Other medicines, foods, and alcohol
- Rifampin, some seizure medicines, and St. John's wort make it less effective.
Tell your provider and pharmacist about every medicine, vitamin, and supplement you take.
Pregnancy and breastfeeding
Stop if pregnant.
Missed doses, overdose, and storage
If you miss a dose
Follow your package insert for late insertion or removal, and use backup birth control as directed.
If someone takes too much
Call Poison Control at 1-800-222-1222 or get help online at poison.org. Call 911 if the person collapses, has a seizure, has trouble breathing, or can't be woken.
Storing it
Store at room temperature, away from heat and moisture (not in the bathroom), and out of reach of children and pets.
Conditions it's used for
Sources
- DailyMed: FDA drug label for Contraceptive vaginal ring (U.S. National Library of Medicine)
- MedlinePlus: Drugs, herbs, and supplements
- FDA: Drugs@FDA
Last updated 2026-11-13.