Methotrexate (Oncology-Injection)/Dasatinib; Imatinib Interactions

This information is generalized and not intended as specific medical advice. Consult your healthcare professional before taking or discontinuing any drug or commencing any course of treatment.

Medical warning:

Moderate. These medicines may cause some risk when taken together. Contact your healthcare professional (e.g. doctor or pharmacist) for more information.

How the interaction occurs:

Dasatinib and imatinib may interfere with methotrexate removal from your body.

What might happen:

The amount of methotrexate in your body may increase, which may cause more serious, potentially life threatening side effects.

What you should do about this interaction:

Make sure your healthcare professionals (e.g. doctor or pharmacist) know that you are taking these medicines together.Your doctor may want to monitor the amount of methotrexate in your blood, change the dose of your methotrexate, or change your other medicine. Let your healthcare professionals know right away if you develop nausea, stomach pain, yellowing of the eyes or skin, dark urine, fever, fatigue, a persistent sore throat, easy bruising or bleeding, black stools, a change in the amount of urine you pass, skin rash, breathing problems, dry cough, diarrhea, or mouth sores while taking these medicines together.Your healthcare professionals may already be aware of this interaction and may be monitoring you for it. Do not start, stop, or change the dosage of any medicine before checking with them first.

  • 1.Mikkelsen TS, Thorn CF, Yang JJ, Ulrich CM, French D, Zaza G, Dunnenberger HM, Marsh S, McLeod HL, Giacomini K, Becker ML, Gaedigk R, Leeder JS, Kager L, Relling MV, Evans W, Klein TE. PharmGKB summary: methotrexate pathway. Pharmacogenet Genomics 2011 Oct;21(10):679-86.
  • 2.This information is based on an extract from the Certara Drug Interaction Database (DIDB) Platform, Copyright Certara 1999-2023..
  • 3.Pommert L, Liberio N, Ng JS, Egelund TA, Siver MJ, Katzenstein HM, Burke MJ. Concurrent Imatinib Dosing With High-dose Methotrexate Leads to Acute Kidney Injury and Delayed Methotrexate Clearance in Pediatric Patients With Philadelphia Chromosome-positive B-Cell Acute Lymphoblastic Leukemia. J Pediatr Hematol Oncol 2021 Mar 1;43(2):e296-e300.
  • 4.Van Hest RM, Schnog JB, Van't Veer MB, Cornelissen JJ. Extremely slow methotrexate elimination in a patient with t(9;22) positive acute lymphoblastic leukemia treated with imatinib. Am J Hematol 2008 Sep; 83(9):757-8.
  • 5.Loue C, Garnier N, Bertrand Y, Bleyzac N. High methotrexate exposure and toxicity in children with t(9;22) positive acute lymphoblastic leukaemia treated with imatinib. J Clin Pharm Ther 2015 Oct;40(5):599-600.
  • 6.Ramsey LB, Mizuno T, Vinks AA, O'Brien MM. Delayed methotrexate clearance in patients with acute lymphoblastic leukemia concurrently receiving dasatinib. Pediatr Blood Cancer 2019 May;66(5):e27618.

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CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.