According to RxList.com, common side effects of Winstrol include an onset or increase of acne, trouble sleeping, headaches, nausea, vomiting, altered skin color and ankle swelling. Winstrol is also known to result in birth defects when taken during pregnancy.
According to RxList.com, Winstrol is used to treat hereditary angioedema, which results in cases of swelling of the face, bowel wall, throat, extremities and genitals. The use of Winstrol may lessen the severity of these swelling events. Winstrol is a synthetic steroid. According to RxList.com, the Winstrol brand name has been discontinued in the United States as of 2014, but generic versions may be available.