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 . 
If you want to reduce body fat in the most effective and safest manner possible, you will need a cutting stack from Crazy-. This will facilitate weight loss while preserving lean muscle mass. You need to diet to lose weight. The main challenge of dieting is that it makes your body activate starvation mode. In this mode, there is metabolism of lean muscle instead of fat reserves. This is simply counterproductive since muscles help in burning calories. With a cutting stack, the body will burn fat instead of muscles when you are dieting. This will make you lose fat while being able to preserve your hard-earned muscle gains.