Drug interactions
Carmustine + Dacarbazine
Severity: Major
Carmustine and Dacarbazine: major 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
Both drugs are cytotoxic alkylating agents that suppress the bone marrow. Combining them can deepen and prolong neutropenia and thrombocytopenia, with delayed nadirs seen with carmustine.
What this interaction means in plain words
Carmustine and Dacarbazine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Carmustine belongs to Oncology; Dacarbazine belongs to Oncology.
Why it happens
Additive myelosuppression from DNA-damaging alkylating agents.
What to do
Monitor blood counts weekly or more often for several weeks after treatment, and adjust doses or delay cycles for cytopenias. Support with growth factors or transfusions as needed.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Dacarbazine
Other interactions of Carmustine
- Carmustine + Pentostatin Contraindicated
- Carmustine + Chlorambucil Major
- Carmustine + Cimetidine Major
- Carmustine + Cyclophosphamide Major
- Carmustine + Fingolimod Major
- Carmustine + Lomustine Major
Frequently asked questions
Can I take Carmustine with Dacarbazine?
MediHelp rates the interaction as major. Carmustine and Dacarbazine can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Both drugs are cytotoxic alkylating agents that suppress the bone marrow. Combining them can deepen and prolong neutropenia and thrombocytopenia, with delayed nadirs seen with carmustine.
How serious is the interaction between Carmustine and Dacarbazine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood counts weekly or more often for several weeks after treatment, and adjust doses or delay cycles for cytopenias. Support with growth factors or transfusions as needed.
What other medicines interact with Dacarbazine?
MediHelp also lists interactions of Dacarbazine with, for example, Adenovirus types 4 and 7 live, Axicabtagene ciloleucel, Belatacept. The full list is on the Dacarbazine page.
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