Stanozolol was developed by Winthrop Laboratories in 1962. It is a synthetic anabolic steroid derived from testosterone, and has been approved by the FDA for human use.

Unlike most injectable anabolic steroids, Stanozolol is not esterified and is sold as an aqueous suspension. The drug has a large oral bioavailability, due to a C17 alpha-alkylation which allows the hormone to survive first pass liver metabolism when ingested. Because of this, Stanozolol is also sold in tablet form.

Stanozolol has been used on both animal and human patients for a number of conditions. In humans, it has been demonstrated to be successful in treating anaemia and hereditary angioedema. Veterinarians may prescribe the drug to improve muscle growth, red blood cell production, increase bone density and stimulate the appetite of debilitated or weakened animals.

This compound is a derivative of dihydrotestosterone, although its activity is much milder than this androgen in nature. It is technically classified as an anabolic steroid, shown to exhibit a slightly greater tendency for muscle growth than androgenic activity in early studies. While dihydrotestosterone really only provides androgenic side effects when administered, stanozolol instead provides quality muscle growth. Admittedly the anabolic properties of this substance are still mild in comparison to many stronger compounds, but it is still a reliable builder. Its efficacy as an anabolic could even be comparable to Dianabol, however Stanozolol does not carry with it the same tendency for water retention.

Before taking any prescription medicine, it is important that you consult your doctor!