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Interações medicamentosas

Glucarpidase + Methotrexate

Gravidade: Moderada

Glucarpidase and Methotrexate: moderate interaction.

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Resumo

Glucarpidase rapidly breaks methotrexate down into DAMPA, which cross-reacts in immunoassays and falsely elevates measured methotrexate. This can lead to misjudged rescue dosing for roughly two days.

O que esta interação significa em palavras simples

Glucarpidase and Methotrexate can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Glucarpidase belongs to Miscellaneous; Methotrexate belongs to Oncology.

Nível de evidência: High

Por que acontece

Enzymatic cleavage of methotrexate to DAMPA and glutamate lowers true levels while DAMPA interferes with immunoassays.

O que fazer

Measure methotrexate with a chromatographic method (e.g., HPLC) for at least 48 hours after glucarpidase. If only immunoassay is available, interpret results with caution.

O que perguntar ao farmacêutico

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

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

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Perguntas frequentes

Can I take Glucarpidase with Methotrexate?

MediHelp rates the interaction as moderate. Glucarpidase and Methotrexate can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Glucarpidase rapidly breaks methotrexate down into DAMPA, which cross-reacts in immunoassays and falsely elevates measured methotrexate. This can lead to misjudged rescue dosing for roughly two days.

How serious is the interaction between Glucarpidase and Methotrexate?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Measure methotrexate with a chromatographic method (e.g., HPLC) for at least 48 hours after glucarpidase. If only immunoassay is available, interpret results with caution.

What other medicines interact with Glucarpidase?

MediHelp also lists interactions of Glucarpidase with, for example, Leucovorin, Folic acid, Pemetrexed. The full list is on the Glucarpidase page.

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