Anadrol is the ultimate bulking steroid. For quick weight gains, nothing beats it. The quality of mass however is questionable. Most of the weight gain is the result of bloating – which incidentally gives the dreaded “moon face” – a condition where water retention is so severe, one’s face becomes swollen to the point of looking like a puffy ball. For powerlifters, this cosmetic inconvenience is of little concern, which is why drol is the powerlifters best friend. It’s fast, it’s powerful, and being an oral, it’s undetectable shortly after using it. And it’s cheap.
Testosterone can be administered parenterally , but it has more irregular prolonged absorption time and greater activity in muscle in enanthate , undecanoate , or cypionate ester form. These derivatives are hydrolyzed to release free testosterone at the site of injection; absorption rate (and thus injection schedule) varies among different esters, but medical injections are normally done anywhere between semi-weekly to once every 12 weeks. A more frequent schedule may be desirable in order to maintain a more constant level of hormone in the system.  Injectable steroids are typically administered into the muscle, not into the vein, to avoid sudden changes in the amount of the drug in the bloodstream. In addition, because estered testosterone is dissolved in oil, intravenous injection has the potential to cause a dangerous embolism (clot) in the bloodstream.