Methotrexate (MTX, Amethopterin) for Dogs and Cats

Overview of Methotrexate for Canines and Felines

Methotrexate, also known as Rheumatrex®, MTX, Amethopterin, is an anti-metabolite, antineoplastic and immunostimulant drug used in the treatment of certain neoplastic diseases and rheumatoid arthritis for dogs and cats. It is a cancer drug used most often for treatment of lymphoma and some other solid tumors in cats and dogs.

Brand Names and Other Names of Methotrexate

Uses of Methotrexate for Dogs and Cats

Methotrexate may be used as follows:

Precautions and Side Effects

Drug Interactions

Methotrexate may interact with other medications. Consult with your veterinarian to determine if other drugs your pet is receiving could interact with methotrexate. Such interactions may include:

How Methotrexate is Supplied

Dosing Information of Methotrexate for Dogs and Cats