Conjugated estrogens and bazedoxifene (Oral)
Medically reviewed by Drugs.com. Last updated on May 31, 2022.
Endometrial Cancer, Cardiovascular Disorders, and Probable DementiaWomen taking bazedoxifene/conjugated estrogens should not take additional estrogens. There is an increased risk of endometrial cancer in women with a uterus that use unopposed estrogens. Bazedoxifene acetate/conjugated estrogens has been shown to reduce the risk of endometrial hyperplasia, which may be a precursor to endometrial cancer. Adequate diagnostic measures, including directed or random endometrial sampling when indicated, should be undertaken to rule out malignancy in postmenopausal women with undiagnosed persistent or recurring abnormal genital bleeding. Estrogen therapy should not be used for the prevention of cardiovascular disease or dementia. The Women's Health Initiative (WHI) estrogen-alone substudy reported increased risks of stroke and deep vein thrombosis (DVT) in postmenopausal women (50 to 79 years of age) during 7.1 years of treatment with daily oral conjugated estrogens (0.625 mg)-alone, relative to placebo. The WHI Memory Study (WHIMS) estrogen-alone ancillary study of WHI reported an increased risk of probable dementia in postmenopausal women 65 years of age and older during 5.2 years of treatment with daily conjugated estrogens (0.625 mg)-alone, relative to placebo. It is unknown whether this finding applies to younger postmenopausal women. In the absence of comparable data, these risks should be assumed to be similar for other doses of conjugated estrogens and other dosage forms of estrogens. Estrogens should be prescribed at the lowest effective doses and for the shortest duration consistent with treatment goals and risks for the individual woman .
Commonly used brand name(s)
In the U.S.
Available Dosage Forms:
Pharmacologic Class: Bazedoxifene
Uses for conjugated estrogens and bazedoxifene
Bazedoxifene and conjugated estrogens combination is used to treat moderate to severe hot flashes and other symptoms of menopause in women with a uterus (womb). Conjugated estrogens and bazedoxifene is also used to prevent osteoporosis (thinning of the bones) after menopause.
Conjugated estrogens and bazedoxifene is available only with your doctor's prescription.
Before using conjugated estrogens and bazedoxifene
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For conjugated estrogens and bazedoxifene, the following should be considered:
Tell your doctor if you have ever had any unusual or allergic reaction to conjugated estrogens and bazedoxifene or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.
Use of Duavee® is not indicated in children.
Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of Duavee® in the elderly. However, elderly patients are more likely to have certain unwanted effects (eg, dementia), which may require caution in patients receiving conjugated estrogens and bazedoxifene. However, use of Duavee® is not recommended in women older than 75 years of age.
Studies in women breastfeeding have demonstrated harmful infant effects. An alternative to this medication should be prescribed or you should stop breastfeeding while using conjugated estrogens and bazedoxifene.
Interactions with medicines
Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking conjugated estrogens and bazedoxifene, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
Using conjugated estrogens and bazedoxifene with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Using conjugated estrogens and bazedoxifene with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.
Interactions with food/tobacco/alcohol
Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.
Other medical problems
The presence of other medical problems may affect the use of conjugated estrogens and bazedoxifene. Make sure you tell your doctor if you have any other medical problems, especially:
- Abnormal or unusual vaginal bleeding or
- Blood clots (eg, deep vein thrombosis, pulmonary embolism), active or history of or
- Breast cancer, known or suspected, or a history of or
- Heart attack, history of or
- Liver disease or
- Protein C, protein S, or other known blood clotting disorders or
- Stroke, history of or
- Tumors (estrogen-dependent), known or suspected—Should not be used in patients with these conditions.
- Asthma or
- Diabetes or
- Edema (fluid retention or body swelling) or
- Endometriosis or
- Epilepsy (seizures) or
- Gallbladder disease or
- Hereditary angioedema (swelling of the face, lips, tongue, or throat) or
- Hypercalcemia (high calcium in the blood) or
- Hypocalcemia (low calcium in the blood) or
- Hypothyroidism (an underactive thyroid) or
- Jaundice during pregnancy or from using hormonal therapy in the past or
- Liver tumors or
- Migraine headache or
- Porphyria (an enzyme problem) or
- Systemic lupus erythematosus (SLE)—Use with caution. May make these conditions worse.
- Heart disease or
- Hypercholesterolemia (high cholesterol or fats in the blood) or
- Hypertension (high blood pressure) or
- Hypertriglyceridemia (high triglycerides or fats in the blood) or
- Obesity, or history of or
- Prolonged periods of immobilization—Use with caution. These conditions may increase risk for more serious side effects.
- Kidney disease—Use is not recommended. Conjugated estrogens and bazedoxifene has not been studied in patients with this condition.
Proper use of conjugated estrogens and bazedoxifene
It is very important that you use conjugated estrogens and bazedoxifene only as directed by your doctor. Do not use more of it, do not use it more often, and do not use it for a longer time than your doctor ordered. To do so may cause unwanted side effects.
Conjugated estrogens and bazedoxifene comes with a patient information leaflet. Read and follow the instructions in the leaflet carefully. Ask your doctor if you have any questions.
Swallow the tablet whole. Do not crush, break, or chew it. You may take conjugated estrogens and bazedoxifene with or without food.
Your doctor may also want you to take vitamin D and calcium supplements while taking conjugated estrogens and bazedoxifene.
Do not eat grapefruit or drink grapefruit juice while you are using conjugated estrogens and bazedoxifene. Grapefruit and grapefruit juice may change the amount of conjugated estrogens and bazedoxifene that is absorbed in the body.
The dose of conjugated estrogens and bazedoxifene will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of conjugated estrogens and bazedoxifene. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
- For oral dosage form (tablets):
- For treatment of menopause symptoms and prevention of osteoporosis:
- Adults—One tablet once a day. Each tablet contains 20 milligrams (mg) of bazedoxifene and 0.45 mg of conjugated estrogens.
- Children—Use is not recommended.
- For treatment of menopause symptoms and prevention of osteoporosis:
If you miss a dose of conjugated estrogens and bazedoxifene, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.
Keep out of the reach of children.
Do not keep outdated medicine or medicine no longer needed.
Ask your healthcare professional how you should dispose of any medicine you do not use.
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.
Keep your medicine in the original package until you are ready to use it. Do not place the tablets in pill boxes or pill organizers. After opening the foil pouch, use the medicine within 60 days.
Precautions while using conjugated estrogens and bazedoxifene
It is very important that your doctor check your progress at regular visits to make sure conjugated estrogens and bazedoxifene is working properly and does not cause unwanted effects. Pelvic exam, breast exam, and mammogram (breast x-ray) may be needed to check for unwanted effects, unless your doctor tells you otherwise. Be sure to keep all appointments.
Do not take other medicines that contain estrogen or progestin while you are being treated with conjugated estrogens and bazedoxifene.
It is unlikely that a postmenopausal woman may become pregnant. But, you should know that using conjugated estrogens and bazedoxifene while you are pregnant could harm your unborn baby. If you think you have become pregnant while using the medicine, tell your doctor right away.
Using conjugated estrogens and bazedoxifene may increase your risk for having blood clots, strokes, or heart attacks. This risk may continue even after you stop using the medicine. Your risk for these serious problems is even greater if you have high blood pressure, high cholesterol in your blood, diabetes or are overweight or smoke cigarettes. Contact your doctor immediately if you experience chest pain, confusion, difficulty speaking, double vision, headaches, an inability to move arms, legs or facial muscle, or an inability to speak.
Using conjugated estrogens and bazedoxifene may increase your risk of endometrial cancer, breast cancer, or uterine cancer. Talk with your doctor about this risk. Check with your doctor immediately if your experience abnormal vaginal bleeding.
Using conjugated estrogens and bazedoxifene may increase your risk of dementia, especially in women 65 years of age and older.
Check with your doctor immediately if severe headache or sudden loss of vision or any other change in vision occurs while you are using conjugated estrogens and bazedoxifene. Your doctor may want you to have your eyes checked by an ophthalmologist (eye doctor).
Make sure any doctor or dentist who treats you knows that you are using conjugated estrogens and bazedoxifene. You may need to stop using conjugated estrogens and bazedoxifene before you have surgery or if you need to stay in bed for an extended time. Conjugated estrogens and bazedoxifene may affect the results of certain medical tests.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal (eg, St. John's wort) or vitamin supplements.
Conjugated estrogens and bazedoxifene side effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Incidence not known
- Acid or sour stomach
- change in vaginal discharge
- chest pain
- clear or bloody discharge from the nipple
- darkened urine
- difficulty with speaking
- dimpling of the breast skin
- dizziness or lightheadedness
- double vision
- fast heartbeat
- full or bloated feeling or pressure in the stomach
- inability to move the arms, legs, or facial muscles
- inability to speak
- inverted nipple
- loss of appetite
- lump in the breast or under the arm
- pain or feeling of pressure in the pelvis
- pain, redness, or swelling in the arm or leg
- pains in the stomach, side, or abdomen, possibly radiating to the back
- persistent crusting or scaling of the nipple
- redness or swelling of the breast
- slow speech
- sore on the skin of the breast that does not heal
- stomach discomfort, upset, or pain
- sudden shortness of breath or troubled breathing
- swelling of the abdominal or stomach area
- vaginal bleeding
- yellow eyes or skin
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
- muscle spasm
- throat pain
- upper abdominal or stomach pain
- Neck pain
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
More about bazedoxifene / conjugated estrogens
- Side effects
- Drug interactions
- Dosage information
- During pregnancy
- Reviews (31)
- En español
- Drug class: sex hormone combinations