Aldosterone blocker Spironolactone has antiinflammatory, antiproliferative and antioxidative effects, that is why pathogenetically it is expedient to use it in complex therapy of rheumatoid arthritis. Material and methods: 46 patients with RA took 2550 mg/day of Spironolactone during 12 months as an addition to standard therapy, the comparison group consisted of 47 patients that got only standard therapy, all the patients were fully examined prior and post the treatment. Results: complex RA therapy leads to improved VAS, HAQ, the antioxidative potential index F; decreased blood concentrations of TNFα, ICAM1, FGF and VEGF in contrast to standard therapy. Complex therapy made reduced the DAS 28 more > 0.6. Conclusions: applying of Spironolactone in complex therapy of rheumatoid arthritis contributes to more pronounced improvement in indices of articular syndrome and patients life quality, reduce of antiinflammatory, antiproliferative and angiogenic cytokines, and more effectively reduces the activity of the disease comparing to standard therapy., Elena Komarova, Borys Rebrov, and Literatura