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 . 
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.
I totally understand what kind of job you had. I work at a Wally World distribution center. Started in shipping, loading about 3 to 4 full semi’s a day. Didn’t know how much weight I loaded. Then switched to non conveyable. When in dog food, I’d stack about 60k/lbs in 12 hours. That was MUCH easier than shipping. My first year, I struggled. Then I talked to my bro-in-law, who is a personal trainer, found and I started to do good. I was taking creatine and C4 prior to work, and took an Animal Pak with UniLiver every break, while eating protien every 3-4 hours. This brought me to Muscle for Life and The Books. I’m in maintenance department now, and are about to join a gym. I’ve been wanting to get the Legion multi’s and switch to Legion supplements. I’m about done reading BLS, and are gonna start the year one challenge. I’ve aready bought BBLS and Shredded Chef. I get excited every time I think about my goals.