Drug interactions
Bazedoxifene-conjugated estrogens + Butalbital
Severity: Moderate
Bazedoxifene-conjugated estrogens and Butalbital: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Butalbital is a barbiturate with enzyme-inducing potential and may lower exposure to conjugated estrogens and bazedoxifene. Reduced efficacy and diminished endometrial protection are possible with prolonged use.
What this interaction means in plain words
Bazedoxifene-conjugated estrogens and Butalbital can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Barbiturate-mediated induction of CYP3A4 and glucuronidation accelerates clearance of the hormone components.
What to do
Monitor for recurrent menopausal symptoms and for unscheduled vaginal bleeding, and evaluate any bleeding. Limit frequent or chronic butalbital use where possible.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Bazedoxifene-conjugated estrogens
- Anastrozole + Bazedoxifene-conjugated estrogens Contraindicated
- Bazedoxifene-conjugated estrogens + Ospemifene Contraindicated
- Antithrombin alfa + Bazedoxifene-conjugated estrogens Major
- Antithrombin iii + Bazedoxifene-conjugated estrogens Major
- Bazedoxifene-conjugated estrogens + Bemiparin Major
- Bazedoxifene-conjugated estrogens + Carbamazepine Major
Frequently asked questions
Can I take Bazedoxifene-conjugated estrogens with Butalbital?
MediHelp rates the interaction as moderate. Bazedoxifene-conjugated estrogens and Butalbital can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Butalbital is a barbiturate with enzyme-inducing potential and may lower exposure to conjugated estrogens and bazedoxifene. Reduced efficacy and diminished endometrial protection are possible with prolonged use.
How serious is the interaction between Bazedoxifene-conjugated estrogens and Butalbital?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for recurrent menopausal symptoms and for unscheduled vaginal bleeding, and evaluate any bleeding. Limit frequent or chronic butalbital use where possible.
What other medicines interact with Bazedoxifene-conjugated estrogens?
MediHelp also lists interactions of Bazedoxifene-conjugated estrogens with, for example, Anastrozole, Ospemifene, Antithrombin alfa. The full list is on the Bazedoxifene-conjugated estrogens page.
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