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 . 
It’s no secret there exist a strong anti-steroidal population and as this “anti” feeling is often so emotionally based it can produce some laughable claims. If you’ve been around the performance enhancing game for any length of time you’re familiar with all the names and acronyms so this will probably make you laugh. Yes, there are a few street names for steroids such as juice or roids but those are some very generic terms and really don’t point to anything specific. We went to a handful of the anti-steroid websites so desperate to paint anabolic hormones in a bad light and they have made up their own street names for steroids that are quite humorous and they include “Pumpers, Gym Candy, Arnolds, Stackers, Balls and Bulls, A’s, Weight Trainers.” “Weight Trainers” are you serious, Arnolds? If that didn’t make you laugh a little then you don’t have a sense of humor but the sad truth is these websites are real and many of them are funded by your government.
Help I have a friend who is a gym goer Im not sure of his quantity or how long he has been taking steroids, but stopped recently because he had really bad neck pain. No dr or scan, ultrasound etc showed anything. Put on huge pain killer amounts didnt help alot but felt after about six weeks some relief. Until today when he thinks a prior knee issue has flared up. If this a result of steroid abuse how long before it heals? Im pretty sure he wont touch them again. He can handle all over aches and pains but these last two injuries have had him off work.