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Carbamazepine + Regorafenib

Gravità: Maggiore

Carbamazepine and Regorafenib: major interaction.

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Sintesi

Carbamazepine is a strong inducer of CYP3A4, CYP2B6, CYP1A2 and P-glycoprotein and accelerates the clearance of regorafenib. The result is reduced regorafenib exposure and possible loss of anti-tumour effect, with increased formation of its active metabolite M5.

Cosa significa questa interazione in parole semplici

Carbamazepine and Regorafenib 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.

Carbamazepine belongs to Central Nervous System; Regorafenib belongs to Oncology.

Livello di evidenza: High

Perché avviene

Enzyme induction by carbamazepine increases metabolic clearance of regorafenib

Cosa fare

Avoid where possible by choosing a non-inducing alternative; if unavoidable, monitor clinical response (and drug levels where available) and consider a higher regorafenib dose only per specialist advice.

Cosa chiedere al farmacista

  • 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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Domande frequenti

Can I take Carbamazepine with Regorafenib?

MediHelp rates the interaction as major. Carbamazepine and Regorafenib 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. Carbamazepine is a strong inducer of CYP3A4, CYP2B6, CYP1A2 and P-glycoprotein and accelerates the clearance of regorafenib. The result is reduced regorafenib exposure and possible loss of anti-tumour effect, with increased formation of its active metabolite M5.

How serious is the interaction between Carbamazepine and Regorafenib?

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 where possible by choosing a non-inducing alternative; if unavoidable, monitor clinical response (and drug levels where available) and consider a higher regorafenib dose only per specialist advice.

What other medicines interact with Carbamazepine?

MediHelp also lists interactions of Carbamazepine with, for example, Artemether / lumefantrine, Cabotegravir, Delamanid. The full list is on the Carbamazepine page.

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