Chemical Formula: C21H32N2O Description Stanozolol is a man-made steroid, similar to the a naturally occurring steroid testosterone. Stanozolol is used in the treatment of hereditary angioedema, which causes episodes of swelling of the face, extremities, genitals, bowel wall, and throat. Stanozolol may decrease the frequency and severity of these attacks. Stanozolol may also be used for purposes other than those listed here. Side effects In rare cases, serious and even fatal cases of liver problems have developed during treatment with stanozolol. Contact your doctor immediately if you experience abdominal pain, light colored stools, dark colored urine, unusual fatigue, nausea or vomiting, or yellowing of the skin or eyes. These may be early signs of liver problems. If you experience any of the following serious side effects, contact your doctor immediately or seek emergency medical attention:
an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);
swelling of the arms or legs (especially ankles);
frequent or persistent erections, or breast tenderness or enlargement (male patients); or