Injectable steroids are injected into muscle tissue, not into the veins. They are slowly released from the muscles into the rest of the body, and may be detectable for months after last use. Injectable steroids can be oil-based or water-based. Injectable anabolic steroids which are oil-based have longer half-life than water-based steroids. Both steroid types have much longer half-lives than oral anabolic steroids. And this is proving to be a drawback for injectables as they have high probability of being detected in drug screening since their clearance times tend to be longer than orals. Athletes resolve this problem by using injectable testosterone early in the cycle then switch to orals when approaching the end of the cycle and drug testing is imminent.
Boldenone greatly stimulates hematopoiesis. Elevated levels of red blood cells improve oxygen delivery to the muscles. This makes this steroid attractive not only for bodybuilders, but also for track and field athletes. Among bodybuilders, Boldenone is appreciated not only for his ability to promote lean and dense muscle growth, but also for its peculiarity to significantly raise appetite and promote has an incredibly long active life, requiring less frequent injections and is often used as a part of very long cycles.