bazedoxifene/conjugated estrogens vs phenytoin
According to this portal's Publishing Organization, this page was last reviewed in August 2026 against our methodology. Figures and extracts on this site, including tables above 1,000 rows when the corpus is that large, are the publisher's responsibility.
Side-by-side comparison of bazedoxifene/conjugated estrogens and phenytoin. 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
The metabolism of bazedoxifene may be increased by concomitant use of substances known to induce UGTs, such as rifampin, phenobarbital, carbamazepine, and phenytoin.
Dilantin
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.
Phenytoin injection is used to treat certain types of seizures. It can also prevent seizures during or after neurosurgery.
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.
This medicine treats generalized tonic-clonic status epilepticus, a type of prolonged seizure. It also helps prevent and treat seizures that may happen during or after brain surgery. Sometimes, it can be used for a short time instead of the oral form of phenytoin when you cannot take the medicine by mouth.
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.
Phenytoin works by slowing down the signals in the brain that cause seizures. It stabilizes nerve cell membranes, reducing excessive electrical activity. This helps to prevent seizures from starting or spreading.
- • Muscle spasms
- • Nausea
- • Diarrhea
- • Upset stomach
- • Upper abdominal pain
No common side effects listed.
No adverse event reports.
- Drug Interaction 1,547
- Seizure 1,382
- Toxicity To Various Agents 1,353
- Convulsion 1,262
- Status Epilepticus 791
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.
This medicine can cause serious heart problems if given too quickly. The injection rate should not be faster than 50 mg per minute for adults, and 1 to 3 mg/kg/min (or 50 mg per minute, whichever is slower) for children. Your heart will be monitored closely during and after the injection.
Do not take Duavee if you are pregnant. It can harm your unborn baby. Duavee is not for women who can get pregnant.
Taking phenytoin during pregnancy may increase the risk of birth defects. If you are pregnant or plan to become pregnant, talk to your doctor about the risks and benefits of this medicine.
How to Read This bazedoxifene/conjugated estrogens vs phenytoin Comparison
bazedoxifene/conjugated estrogens is classified in the SERM / Estrogen Combination drug class, while phenytoin sits within the Anticonvulsant (Hydantoin) 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 phenytoin has 6,335. 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 phenytoin speeds up the process your body uses to clear bazedoxifene, which can make the medication less effective.. 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 phenytoin.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.