Ursolic acid reduces prostate size and dihydrotestosterone level in a rat model of benign prostatic hyperplasia

► Protective effects of ursolic acid on benign prostatic hyperplasia (BPH). ► Ursolic acid reduced the increased prostate weight induced by testosterone. ► Ursolic acid suppressed prostatic stromal and epithelial hyperplasia. ► Ursolic acid reduced the increased dihydrotestosterone level in BPH animals.