What is stanozolol? Winstrol pills is used to treat hereditary angioedema, which causes episodes of swelling of the face, extremities, genitals, intestinal wall, and throat. Stanozolol can reduce the frequency and severity of these episodes. Stanozolol reduces the production of bradykinin and can reduce the impact of a bradykinin storm. Bradykinin storms may be responsible for some of the...