Drug interactions
Dexamethasone-tobramycin + Neratinib
Severity: Moderate
Dexamethasone-tobramycin and Neratinib: 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
Dexamethasone is a CYP3A4 inducer, and neratinib is mainly metabolized by CYP3A4. Systemic dexamethasone may lower neratinib exposure and reduce its efficacy. Topical or ophthalmic use is unlikely to matter.
What this interaction means in plain words
Dexamethasone-tobramycin and Neratinib 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.
Dexamethasone-tobramycin belongs to Anti Bacterial; Neratinib belongs to Oncology.
Why it happens
Dexamethasone induces CYP3A4, accelerating neratinib metabolism.
What to do
Avoid prolonged systemic dexamethasone with neratinib where possible. Short courses may be acceptable with attention to treatment response.
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 Dexamethasone-tobramycin
Other interactions of Neratinib
- Amiodarone + Neratinib Major
- Amobarbital + Neratinib Major
- Aprepitant + Neratinib Major
- Armodafinil + Neratinib Major
- Bosentan + Neratinib Major
- Carbamazepine + Neratinib Major
Frequently asked questions
Can I take Dexamethasone-tobramycin with Neratinib?
MediHelp rates the interaction as moderate. Dexamethasone-tobramycin and Neratinib 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. Dexamethasone is a CYP3A4 inducer, and neratinib is mainly metabolized by CYP3A4. Systemic dexamethasone may lower neratinib exposure and reduce its efficacy. Topical or ophthalmic use is unlikely to matter.
How serious is the interaction between Dexamethasone-tobramycin and Neratinib?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid prolonged systemic dexamethasone with neratinib where possible. Short courses may be acceptable with attention to treatment response.
What other medicines interact with Dexamethasone-tobramycin?
MediHelp also lists interactions of Dexamethasone-tobramycin with, for example, Capreomycin, Carboplatin, Ciprofloxacin. The full list is on the Dexamethasone-tobramycin page.
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