Drug interactions
Glycerol phenylbutyrate + Triamcinolone
Severity: Moderate
Glycerol phenylbutyrate 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
Corticosteroids promote protein catabolism and can raise blood ammonia, working against the ammonia-lowering aim of glycerol phenylbutyrate in urea cycle disorders. Hyperammonemia may be precipitated.
What this interaction means in plain words
Glycerol phenylbutyrate 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.
Glycerol phenylbutyrate belongs to Miscellaneous; Triamcinolone belongs to Endocrine.
Why it happens
Glucocorticoid-induced protein catabolism increases nitrogen load and ammonia production.
What to do
Monitor plasma ammonia closely and adjust the glycerol phenylbutyrate dose if needed. Avoid corticosteroids when alternatives exist.
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 Glycerol phenylbutyrate
- Dexamethasone + Glycerol phenylbutyrate Major
- Glycerol phenylbutyrate + Sodium valproate Major
- Glycerol phenylbutyrate + Valproic acid Major
- Cyclosporin + Glycerol phenylbutyrate Moderate
- Dexamethasone-neomycin-polymyxin + Glycerol phenylbutyrate Moderate
- Dexamethasone-tobramycin + Glycerol phenylbutyrate Moderate
Frequently asked questions
Can I take Glycerol phenylbutyrate with Triamcinolone?
MediHelp rates the interaction as moderate. Glycerol phenylbutyrate 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. Corticosteroids promote protein catabolism and can raise blood ammonia, working against the ammonia-lowering aim of glycerol phenylbutyrate in urea cycle disorders. Hyperammonemia may be precipitated.
How serious is the interaction between Glycerol phenylbutyrate 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 plasma ammonia closely and adjust the glycerol phenylbutyrate dose if needed. Avoid corticosteroids when alternatives exist.
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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