Drug interactions
Fluticasone-salmeterol + Phenobarbital
Severity: Moderate
Fluticasone-salmeterol and Phenobarbital: 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
Phenobarbital induces CYP3A4 and can lower exposure to fluticasone and salmeterol, potentially reducing control of airway disease. It also adds sedation on its own.
What this interaction means in plain words
Fluticasone-salmeterol and Phenobarbital 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
Induction of CYP3A4 by phenobarbital increases the metabolism of fluticasone and salmeterol.
What to do
Monitor asthma or COPD control and consider adjusting inhaled therapy if symptoms worsen. Monitor for excessive sedation from phenobarbital itself.
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 Fluticasone-salmeterol
- Darunavir + Fluticasone-salmeterol Contraindicated
- Elvitegravir / cobicistat / emtricitabine / tenofovir df + Fluticasone-salmeterol Contraindicated
- Fluticasone-salmeterol + Fosamprenavir Contraindicated
- Fluticasone-salmeterol + Indinavir Contraindicated
- Fluticasone-salmeterol + Lopinavir Contraindicated
- Fluticasone-salmeterol + Nelfinavir Contraindicated
Frequently asked questions
Can I take Fluticasone-salmeterol with Phenobarbital?
MediHelp rates the interaction as moderate. Fluticasone-salmeterol and Phenobarbital 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. Phenobarbital induces CYP3A4 and can lower exposure to fluticasone and salmeterol, potentially reducing control of airway disease. It also adds sedation on its own.
How serious is the interaction between Fluticasone-salmeterol and Phenobarbital?
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 asthma or COPD control and consider adjusting inhaled therapy if symptoms worsen. Monitor for excessive sedation from phenobarbital itself.
What other medicines interact with Fluticasone-salmeterol?
MediHelp also lists interactions of Fluticasone-salmeterol with, for example, Darunavir, Elvitegravir / cobicistat / emtricitabine / tenofovir df, Fosamprenavir. The full list is on the Fluticasone-salmeterol page.
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