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Interazioni tra farmaci

Lorlatinib + Rifabutin

Gravità: Controindicata

Lorlatinib and Rifabutin: contraindicated interaction.

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Sintesi

Rifabutin induces CYP3A4 and can lower lorlatinib exposure, risking loss of efficacy. Strong CYP3A inducers given with lorlatinib have been associated with raised liver enzymes. Labeling prohibits the combination.

Cosa significa questa interazione in parole semplici

Lorlatinib and Rifabutin 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; Rifabutin belongs to Anti Bacterial.

Livello di evidenza: High

Perché avviene

CYP3A4 induction increases lorlatinib metabolism and lowers its plasma concentration.

Cosa fare

Do not use together; choose a non-inducing alternative for the indication. If an inducer is necessary, stop it for about 3 half-lives before 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 Rifabutin?

MediHelp rates the interaction as contraindicated. Lorlatinib and Rifabutin 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. Rifabutin induces CYP3A4 and can lower lorlatinib exposure, risking loss of efficacy. Strong CYP3A inducers given with lorlatinib have been associated with raised liver enzymes. Labeling prohibits the combination.

How serious is the interaction between Lorlatinib and Rifabutin?

MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not use together; choose a non-inducing alternative for the indication. If an inducer is necessary, stop it for about 3 half-lives before 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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