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Related Experiment Videos

Drug interactions with methotrexate.

W E Evans, M L Christensen

    The Journal of Rheumatology. Supplement
    |December 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Drug interactions can significantly alter methotrexate

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    Area of Science:

    • Pharmacology
    • Drug Interactions
    • Oncology

    Background:

    • Methotrexate is a crucial chemotherapy agent.
    • Understanding drug interactions is vital for optimizing methotrexate therapy.
    • Altered pharmacokinetics can impact treatment outcomes.

    Purpose of the Study:

    • To review general mechanisms of drug interactions.
    • To detail how various drugs affect methotrexate's absorption, distribution, protein binding, elimination, and cellular transport.
    • To highlight the clinical implications of these interactions.

    Main Methods:

    • Literature review of published studies on drug interactions with methotrexate.
    • Analysis of effects on pharmacokinetic and pharmacodynamic parameters.
    • Evaluation of clinical significance and substantiation.

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    Main Results:

    • Concomitant drug administration can modify methotrexate's efficacy and toxicity.
    • Nonabsorbable antibiotics reduce methotrexate absorption.
    • Nephrotoxic drugs and salicylates/probenecid can impair methotrexate renal clearance and protein binding.

    Conclusions:

    • Various drugs can interact with methotrexate, affecting its therapeutic index.
    • While interactions are documented, their clinical significance often requires further substantiation.
    • Awareness of potential drug interactions is essential for safe methotrexate use.