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Interazioni tra farmaci

Lorlatinib + Rifapentine

Gravità: Controindicata

Lorlatinib and Rifapentine: contraindicated interaction.

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Sintesi

Rifapentine is a strong CYP3A4 inducer that can substantially lower lorlatinib levels, risking loss of efficacy. Combination with rifampin-type inducers has been associated with hepatotoxicity, and labeling contraindicates strong inducers.

Cosa significa questa interazione in parole semplici

Lorlatinib and Rifapentine are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.

Lorlatinib belongs to Oncology; Rifapentine belongs to Anti Bacterial.

Livello di evidenza: High

Perché avviene

Induction of CYP3A4 increases lorlatinib metabolism.

Cosa fare

Avoid the combination and select a non-inducing alternative. Allow adequate washout of rifapentine before starting lorlatinib.

Cosa chiedere al farmacista

  • Is there an alternative to one of these two medicines for me?
  • If both are essential, who is monitoring me and how often?
  • Which symptoms mean I should stop and seek help straight away?

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 Lorlatinib with Rifapentine?

MediHelp rates the interaction as contraindicated. Lorlatinib and Rifapentine are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Rifapentine is a strong CYP3A4 inducer that can substantially lower lorlatinib levels, risking loss of efficacy. Combination with rifampin-type inducers has been associated with hepatotoxicity, and labeling contraindicates strong inducers.

How serious is the interaction between Lorlatinib and Rifapentine?

MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination and select a non-inducing alternative. Allow adequate washout of rifapentine before starting lorlatinib.

What other medicines interact with Lorlatinib?

MediHelp also lists interactions of Lorlatinib with, for example, Amobarbital, Apalutamide, Butabarbital. The full list is on the Lorlatinib page.

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