What safety information should I keep in mind?

Serious warnings and precautions

  • You should not use RINGZA if you smoke cigarettes and are over 35 years old. Smoking increases your risk of serious heart and blood vessel side effects. This risk increases with your age and the number of cigarettes you smoke.
  • RINGZA DOES NOT PROTECT against sexually transmitted infections (STIs), including HIV/AIDS. For protection against STIs, it is advisable to use latex or polyurethane condoms while using RINGZA.

Who shouldn't use RINGZA™?

Do not use RINGZA if you:

  • have the following high-risk factors for blood clots:
    • have or have a history of blood clots in your arms, legs, lungs, or eyes;
    • are over 35 years old and smoke;
    • have reduced blood flow to your brain (cerebrovascular disease);
    • have reduced blood flow or blocked heart arteries (coronary artery disease);
    • have heart rhythm or heart valve problems;
    • have a problem with your blood that makes it clot more than normal;
    • have high blood pressure that is not controlled with medicine or have high blood pressure with blood vessel damage;
    • have diabetes and:
      • you are over 35 years old; or
      • you have high blood pressure; or
      • you have problems with your kidneys, blood vessels, eyes, or nerves; or
      • you have had diabetes for longer than 20 years.
  • have had a stroke or heart attack;
  • have headaches with changes in vision, numbness, or weakness;
  • have ever had migraine headaches with or without focal aura (flashes of light, blind spots and other vision changes);
  • are over age 35 and have any type of migraine headaches;
  • have or have a history of breast cancer or any cancer that is sensitive to the female hormones;
  • have liver disease, liver tumors, severe liver cirrhosis;
  • have unexplained vaginal bleeding without a known reason;
  • are pregnant or think you are pregnant;
  • have a history of blood vessel disease of the eye that has caused loss of vision;
  • have hepatitis C and are taking a drug combination medicine such as ombitasvir/paritaprevir/ritonavir; with or without dasabuvir;
  • are allergic to any ingredients in RINGZA or component of the packaging.

What are some possible side effects of RINGZA™?

Here are some of the possible side effects you may experience while on RINGZA:

  • headache, migraine
  • dizziness
  • nausea, vomiting
  • diarrhea
  • abdomen pain
  • feeling bloated
  • urinary tract infection, painful urination
  • breast tenderness, pain
  • pain during sexual intercourse
  • vaginal problems: discomfort, discharge;
  • irregular, heavy or prolonged bleeding
  • genital itching
  • painful periods
  • spasm in pelvis area
  • weight gain
  • dryness of the genital area
  • mood changes
  • fatigue
  • lower sex drive
  • acne
  • chloasma (dark skin patches) darker patches of skin on the forehead, temples, cheeks, or above the upper lip
  • RINGZA can cause abnormal blood test results. Your healthcare professional will decide when these are necessary and will interpret the results. They will tell you if your test results are abnormal and if you need treatment.
  • Tell your healthcare professional about all the medicines you take, including any drugs, vitamins, minerals, natural supplements or alternative medicines.
  • These are not all the side effects you may have when using RINGZA . If you experience any side effects not listed here, make sure to tell your healthcare professional.

For a complete list of warnings and precautions, please refer to the
RINGZA Patient Medication Information.

1 888-666-0611

Get Medical Information

950, boul. Michèle-Bohec
Blainville (Québec) Canada J7C 5E2

Duchesnay Canada
Duchesnay Inc.
950, boul. Michèle-Bohec
Blainville, Québec, Canada J7C 5E2
Ringza is a trademark of Duchesnay Inc.
© Duchesnay Inc. 2026
Reviewed by PAAB

This site is intended solely for Canadian residents. Medical practices, products and/or regulations can be different from one country to another and as a result, the medical and/or product information on this site may not be appropriate for use outside of Canada. The information is not meant to suggest any medical course of action. Rather, it is intended to inform and to raise awareness so that these issues can be raised for discussion with qualified healthcare professionals.