Drug interactions
Nelarabine + Pentostatin
Severity: Major
Nelarabine and Pentostatin: 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
Pentostatin inhibits adenosine deaminase, which converts nelarabine to ara-G. Combination may alter nelarabine handling and has been associated with increased neurologic toxicity.
What this interaction means in plain words
Nelarabine and Pentostatin 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.
Nelarabine belongs to Oncology; Pentostatin belongs to Oncology.
Why it happens
Adenosine deaminase inhibition by pentostatin interferes with nelarabine metabolism and may increase neurotoxicity.
What to do
Avoid the combination and monitor closely for neurologic toxicity if unavoidable.
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 Nelarabine
- Deferiprone + Nelarabine Major
- Nelarabine + Siponimod Major
- Nelarabine + Tofacitinib Major
- Denosumab + Nelarabine Moderate
- Fingolimod + Nelarabine Moderate
- Hydroxyurea + Nelarabine Moderate
Other interactions of Pentostatin
- Carmustine + Pentostatin Contraindicated
- Etoposide + Pentostatin Contraindicated
- Fludarabine + Pentostatin Contraindicated
- Cyclophosphamide + Pentostatin Major
- Deferiprone + Pentostatin Major
- Fingolimod + Pentostatin Major
Frequently asked questions
Can I take Nelarabine with Pentostatin?
MediHelp rates the interaction as major. Nelarabine and Pentostatin 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. Pentostatin inhibits adenosine deaminase, which converts nelarabine to ara-G. Combination may alter nelarabine handling and has been associated with increased neurologic toxicity.
How serious is the interaction between Nelarabine and Pentostatin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination and monitor closely for neurologic toxicity if unavoidable.
What other medicines interact with Nelarabine?
MediHelp also lists interactions of Nelarabine with, for example, Deferiprone, Siponimod, Tofacitinib. The full list is on the Nelarabine page.
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