Drug interactions
Rifabutin + Zaleplon
Severity: Minor
Rifabutin and Zaleplon: 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
Rifabutin is an inducer of CYP3A4 and may reduce zaleplon exposure, though zaleplon is metabolised mainly by aldehyde oxidase with CYP3A4 as a secondary pathway. The hypnotic effect may be modestly reduced, and the effect is smaller than with strong inducers such as rifampicin.
What this interaction means in plain words
Rifabutin and Zaleplon have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Rifabutin belongs to Anti Bacterial; Zaleplon belongs to Central Nervous System.
Why it happens
Rifabutin induces CYP3A4, increasing the minor oxidative clearance of zaleplon.
What to do
Monitor for loss of hypnotic efficacy; no routine dose change is needed. If efficacy is lost, consider a higher zaleplon dose within labeled limits or an alternative hypnotic.
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?
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Other interactions of Zaleplon
- Calcium / magnesium / potassium / sodium oxybates + Zaleplon Contraindicated
- Sodium oxybate + Zaleplon Contraindicated
- Brexanolone + Zaleplon Major
- Buprenorphine long-acting + Zaleplon Major
- Buprenorphine subdermal implant + Zaleplon Major
- Buprenorphine transdermal + Zaleplon Major
Other interactions of Rifabutin
- Cabotegravir + Rifabutin Contraindicated
- Lorlatinib + Rifabutin Contraindicated
- Rifabutin + Voriconazole Contraindicated
- Apixaban + Rifabutin Major
- Axitinib + Rifabutin Major
- Brexpiprazole + Rifabutin Major
Frequently asked questions
Can I take Rifabutin with Zaleplon?
MediHelp rates the interaction as minor. Rifabutin and Zaleplon have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Rifabutin is an inducer of CYP3A4 and may reduce zaleplon exposure, though zaleplon is metabolised mainly by aldehyde oxidase with CYP3A4 as a secondary pathway. The hypnotic effect may be modestly reduced, and the effect is smaller than with strong inducers such as rifampicin.
How serious is the interaction between Rifabutin and Zaleplon?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for loss of hypnotic efficacy; no routine dose change is needed. If efficacy is lost, consider a higher zaleplon dose within labeled limits or an alternative hypnotic.
What other medicines interact with Zaleplon?
MediHelp also lists interactions of Zaleplon with, for example, Calcium / magnesium / potassium / sodium oxybates, Sodium oxybate, Brexanolone. The full list is on the Zaleplon page.
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