Leflunomide (Latin Leflunomidum, called Leflunomide) - pro-drug, immunosuppressant, showing antiproliferative properties against T-lymphocytes and anti-inflammatory used to treat rheumatoid arthritis and psoriatic arthritis, to slow progression of the disease, belongs to a group of slow acting drugs przeciwreumatycznych, modifying the course of the disease (called DMARDs - disease modifying drugs Antirheumatica). Leflu