Drug interactions
Carbamazepine + Zaleplon
Severity: Moderate
Carbamazepine and Zaleplon: 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
Carbamazepine induces CYP3A4 and can reduce zaleplon exposure, though zaleplon is mainly metabolized by aldehyde oxidase. This may weaken the hypnotic effect.
What this interaction means in plain words
Carbamazepine and Zaleplon 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.
Carbamazepine belongs to Central Nervous System; Zaleplon belongs to Central Nervous System.
Why it happens
Carbamazepine induces CYP3A4, which handles the secondary metabolic pathway of zaleplon.
What to do
Monitor for reduced hypnotic efficacy and consider an alternative hypnotic if sleep is inadequate. Do not exceed the labeled zaleplon dose.
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 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 Carbamazepine
- Artemether / lumefantrine + Carbamazepine Contraindicated
- Cabotegravir + Carbamazepine Contraindicated
- Carbamazepine + Delamanid Contraindicated
- Carbamazepine + Dienogest / estradiol valerate Contraindicated
- Carbamazepine + Doravirine Contraindicated
- Carbamazepine + Elbasvir / grazoprevir Contraindicated
Frequently asked questions
Can I take Carbamazepine with Zaleplon?
MediHelp rates the interaction as moderate. Carbamazepine and Zaleplon 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. Carbamazepine induces CYP3A4 and can reduce zaleplon exposure, though zaleplon is mainly metabolized by aldehyde oxidase. This may weaken the hypnotic effect.
How serious is the interaction between Carbamazepine and Zaleplon?
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 reduced hypnotic efficacy and consider an alternative hypnotic if sleep is inadequate. Do not exceed the labeled zaleplon dose.
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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