The Active-Life of injectable winstrol depot is around 48 hours, a very short lived steroid. The injection form of stanozolol is a water based injectable steroid that is a derivative of DHT. Both oral and injectable forms are c17-alfa-alkylated chemicals. This of course makes the injectable form moderately liver toxic and the oral form liver toxic in high dosages. The injectable form is the same as the oral. This is the reason the injectable form has frequently been used as an oral as well. All c17-alfa-alkylated AAS, when passing through the liver for deactivation, cause a elevation in IGF-1 production. The injectable stanozolol is usually much cheaper than oral stanozolol. Here is a complete profile of the steroid winstrol