Methotrexate is prescribed for psoriasis and certain cancers. It's a generic medication, available as the brand-name drugs Trexall, Xatmep, and more. It comes as an injectable IV solution ...

Hair loss is a common side effect of some arthritis medications, including Rheumatrex or Trexall (brand names of methotrexate), Arava (leflunomide), Enbrel (etanercept), and Humira (adalimumab).