Drug interactions
Dacarbazine + Thiotepa
Severity: Major
Dacarbazine and Thiotepa: 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 agents suppress the bone marrow. Concurrent use can cause more severe neutropenia, thrombocytopenia and anemia, increasing infection and bleeding risk.
What this interaction means in plain words
Dacarbazine and Thiotepa 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.
Dacarbazine belongs to Oncology; Thiotepa belongs to Oncology.
Why it happens
Additive myelosuppression from two cytotoxic alkylating agents.
What to do
Monitor complete blood counts frequently and adjust doses or delay treatment for cytopenias. Use supportive care such as growth factors or transfusion when 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 Thiotepa
- Bendamustine + Thiotepa Major
- Chlorambucil + Thiotepa Major
- Clarithromycin + Thiotepa Major
- Cyclophosphamide + Thiotepa Major
- Deferiprone + Thiotepa Major
- Fingolimod + Thiotepa Major
Frequently asked questions
Can I take Dacarbazine with Thiotepa?
MediHelp rates the interaction as major. Dacarbazine and Thiotepa 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 agents suppress the bone marrow. Concurrent use can cause more severe neutropenia, thrombocytopenia and anemia, increasing infection and bleeding risk.
How serious is the interaction between Dacarbazine and Thiotepa?
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 complete blood counts frequently and adjust doses or delay treatment for cytopenias. Use supportive care such as growth factors or transfusion when 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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