Treating rheumatoid arthritis with new disease modifying drugs.

Rheumatoid arthritis (RA) is a serious illness that can only be controlled by the appropriate use of disease modifying anti-rheumatic drugs (DMARDs). In spite of the successful use of such substances, and of methotrexate in particular, a large number of patients still experience disease progression. Leflunomide and the two anti-TNF agents, infliximab and etanercept, were therefore warmly greeted as very welcome additions to the rheumatologist's armamentarium. These successful newcomers, their strengths and problems are the focus of the present review.