We investigated the anti-inflammatory activity of leaf extract of Sida rhombifolia Linn and compared its effect with an anti-inflammatory agent Indometacin in rats. The tested substance was leaf extract of Sida rhombifolia Linn, which were dissolved in 0,5 % CMC-Na solution and given in 3 doses: dose I 30 ppm/g body weight, dose II 60 ppm/g body weight, and dose III 120 ppm/g body weight. We e…