The most commonly used AAS in medicine are testosterone and its various esters (but most commonly testosterone undecanoate , testosterone enanthate , testosterone cypionate , and testosterone propionate ),  nandrolone esters (most commonly nandrolone decanoate and nandrolone phenylpropionate ), stanozolol , and metandienone (methandrostenolone).  Others also available and used commonly but to a lesser extent include methyltestosterone , oxandrolone , mesterolone , and oxymetholone , as well as drostanolone propionate , metenolone (methylandrostenolone), and fluoxymesterone .  Dihydrotestosterone (DHT; androstanolone, stanolone) and its esters are also notable, although they are not widely used in medicine.  Boldenone undecylenate and trenbolone acetate are used in veterinary medicine . 
I am a long-time user of various anabolic steroids but I have never looked back after a friend introduced this wonderful D-bol to me. Though I was already well built before I started taking D-bol, I experienced a significant increase in muscle mass. I had hit a sort of plateau phase with my usual steroids and was eager for something that would help me add a few more pounds of muscle. Dianabol did exactly that. As is the case with all anabolic steroids, you must be aware of the consequences of using too much of them without consulting a doctor. I frequently seek advice from my doctor about anything that has to do with using steroids to build muscle. So far I haven’t experienced any side effects and see myself sticking to Dianabol for many years to come.