Drug interactions
Rifabutin + Triamcinolone
Severity: Moderate
Rifabutin and Triamcinolone: 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
Rifabutin induces CYP3A4 and may lower triamcinolone exposure, potentially reducing the anti-inflammatory or immunosuppressive effect. The effect is smaller than with rifampicin, and it is more relevant for systemic or repeated dosing than a single injection.
What this interaction means in plain words
Rifabutin and Triamcinolone 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.
Rifabutin belongs to Anti Bacterial; Triamcinolone belongs to Endocrine.
Why it happens
Rifabutin induces hepatic and intestinal CYP3A4, increasing the metabolism of triamcinolone.
What to do
Monitor for loss of corticosteroid effect and increase the triamcinolone dose if needed. Consider an alternative if control is lost.
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 Triamcinolone
- Smallpox vaccine live + Triamcinolone Contraindicated
- Triamcinolone + Zoster vaccine live Contraindicated
- Adenovirus types 4 and 7 live + Triamcinolone Major
- Aldesleukin + Triamcinolone Major
- Atazanavir + Triamcinolone Major
- Axicabtagene ciloleucel + Triamcinolone 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 Triamcinolone?
MediHelp rates the interaction as moderate. Rifabutin and Triamcinolone 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. Rifabutin induces CYP3A4 and may lower triamcinolone exposure, potentially reducing the anti-inflammatory or immunosuppressive effect. The effect is smaller than with rifampicin, and it is more relevant for systemic or repeated dosing than a single injection.
How serious is the interaction between Rifabutin and Triamcinolone?
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 loss of corticosteroid effect and increase the triamcinolone dose if needed. Consider an alternative if control is lost.
What other medicines interact with Triamcinolone?
MediHelp also lists interactions of Triamcinolone with, for example, Smallpox vaccine live, Zoster vaccine live, Adenovirus types 4 and 7 live. The full list is on the Triamcinolone page.
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