Drug interactions
Trastuzumab + Vincristine liposomal
Severity: Moderate
Trastuzumab and Vincristine liposomal: 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
Trastuzumab given with myelosuppressive chemotherapy has been associated with more neutropenia and febrile neutropenia than chemotherapy alone. Liposomal vincristine adds its own marrow and neurotoxic effects, so infection risk may rise.
What this interaction means in plain words
Trastuzumab and Vincristine liposomal 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
Additive pharmacodynamic myelosuppression, with trastuzumab increasing the neutropenic effect of cytotoxic chemotherapy.
What to do
Monitor complete blood counts and absolute neutrophil count regularly and assess promptly for fever or infection. Delay or reduce chemotherapy doses per protocol if severe neutropenia develops.
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 Trastuzumab
Frequently asked questions
Can I take Trastuzumab with Vincristine liposomal?
MediHelp rates the interaction as moderate. Trastuzumab and Vincristine liposomal 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. Trastuzumab given with myelosuppressive chemotherapy has been associated with more neutropenia and febrile neutropenia than chemotherapy alone. Liposomal vincristine adds its own marrow and neurotoxic effects, so infection risk may rise.
How serious is the interaction between Trastuzumab and Vincristine liposomal?
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 complete blood counts and absolute neutrophil count regularly and assess promptly for fever or infection. Delay or reduce chemotherapy doses per protocol if severe neutropenia develops.
What other medicines interact with Trastuzumab?
MediHelp also lists interactions of Trastuzumab with, for example, Daunorubicin, Doxorubicin liposomal, Doxorubicin. The full list is on the Trastuzumab page.
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