Drug interactions
Dexamethasone + Trastuzumab
Severity: Minor
Dexamethasone and Trastuzumab: 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
Trastuzumab does not itself cause strong immunosuppression, but it increases neutropenia when given with myelosuppressive chemotherapy, and dexamethasone adds immune suppression. The pair has no distinct direct interaction and the main concern is infection in patients on combined regimens.
What this interaction means in plain words
Dexamethasone and Trastuzumab have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Dexamethasone belongs to Endocrine; Trastuzumab belongs to Oncology.
Why it happens
No established direct interaction; additive infection risk from corticosteroid immunosuppression and treatment-related neutropenia.
What to do
Monitor neutrophil counts and signs of infection during chemotherapy regimens, as per standard practice.
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 Dexamethasone
- Bcg vaccine live + Dexamethasone Contraindicated
- Dexamethasone + Mifepristone Contraindicated
- Dexamethasone + Rilpivirine Contraindicated
- Dexamethasone + Smallpox vaccine live Contraindicated
- Dexamethasone + Varicella virus vaccine live Contraindicated
- Dexamethasone + Yellow fever vaccine Contraindicated
Other interactions of Trastuzumab
Frequently asked questions
Can I take Dexamethasone with Trastuzumab?
MediHelp rates the interaction as minor. Dexamethasone and Trastuzumab have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Trastuzumab does not itself cause strong immunosuppression, but it increases neutropenia when given with myelosuppressive chemotherapy, and dexamethasone adds immune suppression. The pair has no distinct direct interaction and the main concern is infection in patients on combined regimens.
How serious is the interaction between Dexamethasone and Trastuzumab?
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 neutrophil counts and signs of infection during chemotherapy regimens, as per standard practice.
What other medicines interact with Dexamethasone?
MediHelp also lists interactions of Dexamethasone with, for example, Bcg vaccine live, Mifepristone, Rilpivirine. The full list is on the Dexamethasone page.
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