bazedoxifene/conjugated estrogens vs rifampin
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Side-by-side comparison of bazedoxifene/conjugated estrogens and rifampin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
John's Wort (Hypericum perforatum) preparations, phenobarbital, carbamazepine, and rifampin, may reduce plasma concentrations of some estrogens, possibly resulting in a decrease in therapeutic effects and/or changes in the uterine bleeding profile. The metabolism of bazedoxifene may be increased by concomitant use of substances known to induce UGTs, such as rifampin, phenobarbital, carbamazepine, and phenytoin.
Rifadin
Duavee is a combination medicine containing estrogen and a drug that blocks estrogen in some parts of the body. It is used to treat menopause symptoms and prevent bone loss after menopause in women with a uterus.
Rifampin is an antibiotic medicine. It fights bacteria in your body to treat infections.
Duavee is used to treat moderate to severe hot flashes caused by menopause. It can also help prevent bone loss (osteoporosis) after menopause. You should only use Duavee if you are at significant risk of osteoporosis and other non-estrogen medications should be carefully considered. Use Duavee for the shortest time that works for you, based on your goals and risks.
Rifampin treats tuberculosis (TB) and helps eliminate the bacteria that cause meningitis from your nose and throat. It is important to use rifampin only for infections that are proven or strongly suspected to be caused by bacteria. This helps to prevent bacteria from becoming resistant to the medicine.
Duavee contains two medicines. Estrogen helps with menopause symptoms and bone loss. Bazedoxifene blocks estrogen's effects in the uterus, which lowers the risk of uterine cancer that can happen when taking estrogen alone.
Rifampin works by stopping bacteria from growing and multiplying. It does this by blocking a key enzyme that the bacteria need to make proteins. This helps your body fight off the infection.
- • Muscle spasms
- • Nausea
- • Diarrhea
- • Upset stomach
- • Upper abdominal pain
- • Heartburn
- • Upset stomach
- • Loss of appetite
- • Nausea
- • Vomiting
No adverse event reports.
- Drug Interaction 970
- Drug Reaction With Eosinophilia And Systemic Symptoms 727
- Nausea 628
- Condition Aggravated 550
- Pyrexia 541
Duavee has serious warnings. It can increase the risk of uterine cancer, stroke, blood clots, and dementia. Women taking Duavee should not take additional estrogens. Estrogen should not be used to prevent heart disease or dementia. Talk to your doctor about the risks and benefits of Duavee.
Rifampin can cause liver problems. Tell your doctor right away if you have yellowing of the skin or eyes, dark urine, or stomach pain. Rifampin can also cause blood problems. Tell your doctor if you have unusual bleeding or bruising.
Do not take Duavee if you are pregnant. It can harm your unborn baby. Duavee is not for women who can get pregnant.
Tell your doctor if you are pregnant or plan to become pregnant. Rifampin can make birth control pills less effective, so use other forms of birth control. Talk to your doctor if you are breastfeeding.
How to Read This bazedoxifene/conjugated estrogens vs rifampin Comparison
bazedoxifene/conjugated estrogens is classified in the SERM / Estrogen Combination drug class, while rifampin sits within the Rifamycin Antibiotic class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, bazedoxifene/conjugated estrogens has 0 submissions while rifampin has 3,416. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to rifampin speeds up the removal of these medicines from your system, which can lead to lower drug levels in your body. this may cause the treatment to be less effective or lead to changes in bleeding patterns.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for bazedoxifene/conjugated estrogens or rifampin.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.