Drug interactions
Hydroxyurea + Interferon beta 1a
Severity: Major
Hydroxyurea and Interferon beta 1a: 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
Cutaneous vasculitic toxicities, including ulceration and gangrene, have been reported in patients receiving hydroxyurea who have current or prior interferon exposure. The events can be severe and may require stopping therapy.
What this interaction means in plain words
Hydroxyurea and Interferon beta 1a 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.
Hydroxyurea belongs to Miscellaneous; Interferon beta 1a belongs to Central Nervous System.
Why it happens
The mechanism is not well established; additive vascular and cutaneous toxicity is suspected.
What to do
Examine the skin regularly for ulceration or vasculitic lesions and discontinue hydroxyurea if they develop; consider alternatives in patients with prior interferon exposure.
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 Interferon beta 1a
Other interactions of Hydroxyurea
Frequently asked questions
Can I take Hydroxyurea with Interferon beta 1a?
MediHelp rates the interaction as major. Hydroxyurea and Interferon beta 1a 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. Cutaneous vasculitic toxicities, including ulceration and gangrene, have been reported in patients receiving hydroxyurea who have current or prior interferon exposure. The events can be severe and may require stopping therapy.
How serious is the interaction between Hydroxyurea and Interferon beta 1a?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Examine the skin regularly for ulceration or vasculitic lesions and discontinue hydroxyurea if they develop; consider alternatives in patients with prior interferon exposure.
What other medicines interact with Interferon beta 1a?
MediHelp also lists interactions of Interferon beta 1a with, for example, Deferiprone, Etrasimod, Idecabtagene vicleucel. The full list is on the Interferon beta 1a page.
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