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Drug interactions

Bazedoxifene / conjugated estrogens + Piperacillin-tazobactam

Severity: Minor

Bazedoxifene / conjugated estrogens and Piperacillin-tazobactam: minor 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

Antibiotics were once thought to reduce enterohepatic recycling of estrogens by altering gut flora. Evidence of a clinically meaningful loss of estrogen effect with non-enzyme-inducing antibiotics is lacking, and the risk is considered very low. Intravenous piperacillin-tazobactam is used in hospital settings.

What this interaction means in plain words

Bazedoxifene / conjugated estrogens and Piperacillin-tazobactam have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.

Evidence level: Low

Why it happens

Theoretical reduction in gut bacterial deconjugation and enterohepatic recirculation of estrogens.

What to do

No action is usually needed. Report any unexpected vaginal bleeding or loss of efficacy.

What to ask your pharmacist

  • Is there anything I should notice while taking both?
  • Do I need to tell my doctor at the next visit?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Bazedoxifene / conjugated estrogens with Piperacillin-tazobactam?

MediHelp rates the interaction as minor. Bazedoxifene / conjugated estrogens and Piperacillin-tazobactam have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Antibiotics were once thought to reduce enterohepatic recycling of estrogens by altering gut flora. Evidence of a clinically meaningful loss of estrogen effect with non-enzyme-inducing antibiotics is lacking, and the risk is considered very low. Intravenous piperacillin-tazobactam is used in hospital settings.

How serious is the interaction between Bazedoxifene / conjugated estrogens and Piperacillin-tazobactam?

MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No action is usually needed. Report any unexpected vaginal bleeding or loss of efficacy.

What other medicines interact with Piperacillin-tazobactam?

MediHelp also lists interactions of Piperacillin-tazobactam with, for example, Vancomycin, Amikacin, Antithrombin alfa. The full list is on the Piperacillin-tazobactam page.

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