MedicalTerminology DB

Meaning of MTX: A drug used to treat some types of cancer, rheumatoid arthritis, and severe skin conditions, such as psoriasis.

Definition of MTX

A drug used to treat some types of cancer, rheumatoid arthritis, and severe skin conditions, such as psoriasis. MTX stops cells from making DNA and may kill cancer cells. It is a type of antimetabolite. Also called amethopterin, methotrexate, and Rheumatrex.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

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For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.