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 . 
Anabolic steroids differ in their characteristics, which means there are steroids that are only suitable for specific uses. For instance, Trenbolone is not recommended for bulking but it is an outstanding fat burner. This makes it perfect for a lean mass cycle or a cutting cycle. Always take the side effects of a particular compound into consideration whenever you plan a stack. Do not combine anabolic steroids that show similar side effects. For example, never combine Anapolon and Dianabol because they are already quite toxic and if you combine them, the toxicity will increase exponentially and cause serious damage to your body.
If you implement a Dianabol cycle, there is a crucial factor you need to understand. While Dbol is one powerful anabolic steroid , it is not a magical pill. If you supplement with Dianabol, it’s not going to automatically make you big. Granted, your strength will go up, but how big you get will be dependent on one thing and one thing only; food. If you do not eat enough to meet your growth needs, you’re not going to grow. Conversely, if you do eat enough to grow and you add in Dianabol, you will grow more than you would have otherwise. This isn’t rocket science, but for some reason, it is a concept lost on most. It is also necessary to note, if you are running a Dianabol cycle this does not mean you should eat like a pig. If you gorge and eat as if there’s no end in sight, Dbol or not you’re going to get fat. The rules of nutrition do not change just because you’re supplementing with anabolic steroids.