(estradiol vaginal ring)
Read this Patient Information before you start using ESTRING and each time you get a refill. There may be new information. This information does not take the place of talking to your healthcare provider about your menopausal symptoms or your treatment.
What is the most important information I should know about ESTRING (an estrogen hormone)?
- Using estrogen-alone may increase your chance of getting cancer of the uterus (womb).
Report any unusual vaginal bleeding right away while you are using ESTRING. Vaginal bleeding after menopause may be a warning sign of cancer of the uterine (womb). Your healthcare provider should check any unusual vaginal bleeding to find out the cause.
- Do not use estrogen-alone to prevent heart disease, heart attacks, strokes, or dementia (decline in brain function).
- Using estrogen-alone may increase your chances of getting strokes or blood clots.
- Using estrogen-alone may increase your chance of getting dementia, based on a study of women 65 years of age or older.
- Do not use estrogens with progestins to prevent heart disease, heart attacks, strokes, or dementia.
- Using estrogens with progestins may increase your chance of getting heart attacks, strokes, breast cancer, or blood clots.
- Using estrogens with progestins may increase your chance of getting dementia, based on a study of women 65 years of age or older.
- You and your healthcare provider should talk regularly about whether you still need treatment with ESTRING.
ESTRING (estradiol vaginal ring) is an off-white, soft, flexible ring with a center that contains 2 mg of estradiol (an estrogen hormone). ESTRING releases estradiol into the vagina in a consistent, stable manner for 90 days. The soft, flexible ring is placed in the upper third of the vagina (by the physician or the patient). ESTRING should be removed after 90 days of continuous use. If continuation of therapy is indicated, the flexible ring should be replaced.
ESTRING is used after menopause to treat moderate to severe menopausal changes in and around the vagina.
You and your healthcare provider should talk regularly about whether you still need treatment with ESTRING to control these problems.
Do not start using ESTRING if you:
- have unusual vaginal bleeding
Vaginal bleeding after menopause may be a warning sign of cancer of the uterus (womb). Your healthcare provider should check any unusual vaginal bleeding to find out the cause.
- currently have or have had certain cancers
Estrogens may increase the chance of getting certain types of cancers, including cancer of the breast or uterus. If you have or had cancer, talk with your healthcare provider about whether you should use ESTRING.
- had a stroke or heart attack
- currently have or have had blood clots
- currently have or have had liver problems
- have been diagnosed with a bleeding disorder
- are allergic to ESTRING or any of its ingredients
See the list of ingredients in ESTRING at the end of this leaflet.
- think you may be pregnant
ESTRING is not for pregnant women. If you think you may be pregnant, you should have a pregnancy test and know the results. Do not use ESTRING if the test is positive and talk to your healthcare provider.
What should I tell my healthcare provider before I use ESTRING? Before you use ESTRING, tell your healthcare provider if you:
- have any unusual vaginal bleeding
Vaginal bleeding after menopause may be a warning sigh of cancer of the uterus (womb). Your healthcare provider should check any unusual vaginal bleeding to find out the cause.
- have any other medical conditions
Your healthcare provider may need to check you more carefully if you have certain conditions, such as asthma (wheezing), epilepsy (seizures), diabetes, migraine, endometriosis, lupus, angioedema (swelling of face and tongue), or problems with your heart, liver, thyroid, kidneys, or have high calcium levels in your blood.
- are going to have surgery or will be on bed rest
Your healthcare provider will let you know if you need to stop using ESTRING.
- are breast feeding
The hormone in ESTRING can pass into your breast milk.
Tell your healthcare provider about all the medicines you take including prescription and nonprescription medicines, vitamins, and herbal supplements. Some medicines may affect how ESTRING works. ESTRING may also affect how your other medicines work.
What are the possible side effects of ESTRING?
If you experience any of the following side-effects, immediately remove ESTRING if possible and contact your healthcare provider. If you experience difficulty or pain when trying to remove the ring please do not continue and contact your healthcare provider:
- Cases of toxic shock syndrome (TSS) have been reported in women using vaginal rings. Toxic shock syndrome is a rare but serious illness caused by a bacterial infection. Symptoms of TSS include fever, nausea, vomiting, diarrhea, muscle pain, dizziness, faintness, or a sunburn-like rash on face and body.
- Cases of the vaginal ring becoming attached to the vaginal wall, making ring removal difficult, have occurred. Some women have needed surgery to remove vaginal rings
- Cases of erosion (wearing away) and ulceration (holes) of the vaginal lining have also occurred. Symptoms of vaginal erosion and ulceration can include vaginal pain or soreness, vaginal bleeding, and redness, swelling, or scrapes in the vagina.
- Cases of bowel obstruction have been reported.
- Severe allergic reactions have been reported including skin rash, giant hives, swelling of the eyelids, face, lips, tongue or throat.
The most frequently reported side effect with ESTRING use is increased vaginal secretions. Many of these vaginal secretions are like those that occur normally prior to menopause and indicate that ESTRING is working. Vaginal secretions that are associated with a bad odor, vaginal itching, or other signs of vaginal infection are NOT normal and may indicate a risk or a cause for concern. Other side effects may include vaginal discomfort, abdominal pain, or genital itching.
What are the possible side effects of estrogens?
Side effects are grouped by how serious they are and how often they happen when you are treated.
Serious, but less common side effects include:
- heart attack
- blood clots
- breast cancer
- cancer of the lining of the uterus (womb)
- cancer of the ovary
- high blood pressure
- high blood sugar
- gallbladder disease
- liver problems
- changes in your thyroid hormone levels
- enlargement of benign tumors of the uterus ("fibroids")
Call your healthcare provider right away if you get any of the following warning signs or any other unusual symptoms that concern you:
- new breast lumps
- unusual vaginal bleeding
- changes in vision or speech
- sudden new severe headaches
- severe pains in your chest or legs with or without shortness of breath, weakness and fatigue
- memory loss or confusion
Less serious, but common side effects include:
- breast pain
- irregular vaginal bleeding or spotting
- stomach or abdominal cramps, bloating
- nausea and vomiting
- fluid retention
- vaginal yeast infection
These are not all the possible side effects of ESTRING. For more information, ask your healthcare provider or pharmacist for advice about side effects. Tell your healthcare provider if you have any side effect that bothers you or does not go away.
Call your healthcare provider for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may report side effects to Pfizer at 1-800-438-1985.
What can I do to lower my chances of getting a serious side effect with ESTRING?
- Follow carefully the instructions for use.
- Talk with your healthcare provider regularly about whether you should continue using ESTRING.
- See your healthcare provider right away if you get vaginal bleeding while using ESTRING.
- If you have fever, nausea, vomiting, diarrhea, muscle pain, dizziness, faintness, or a sunburn-like rash on face and body, remove ESTRING and contact your healthcare provider.
- Contact your healthcare provider if you have difficulty removing the vaginal ring.
- Have a breast exam and mammogram (breast X-ray) every year unless your healthcare provider tells you something else. If members of your family have had breast cancer or if you have ever had breast lumps or an abnormal mammogram, you may need to have breast examinations more often.
- If you have high blood pressure, high cholesterol (fat in the blood), diabetes, are overweight, or if you use tobacco, you may have higher chances for getting heart disease. Ask your healthcare provider for ways to lower your chances for getting heart disease.
General information about safe and effective use of ESTRING
Medicines are sometimes prescribed for conditions that are not mentioned in patient information leaflets. Do not use ESTRING for conditions for which it was not prescribed. Do not give ESTRING to other people, even if they have the same symptoms you have. It may harm them.
Keep ESTRING out of the reach of children.
This leaflet provides a summary of the most important information about ESTRING. If you would like more information, talk with your healthcare provider or pharmacist. You can ask for information about ESTRING that is written for health professionals. You can get more information by calling the toll free number 1-888-691-6813.
What are the ingredients in ESTRING?
ESTRING (estradiol vaginal ring) is a slightly opaque ring with a whitish core containing a drug reservoir of 2 mg estradiol (an estrogen hormone). Estradiol, silicone polymers and barium sulfate are combined to form the ring.
Storage: Store at controlled room temperature 15° to 25 °C (59 °F to 77 °F).