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 . 
Many people who supplement with this bronchodilator will slowly ramp down over a period of time, steadily dropping the dose every few days until it is discontinued altogether. There is truly no need for such a method as it is by-large overkill and provides no strategic advantage. No, you do not want to discontinue use cold turkey, all you need to do is simply drop down to your original Clenbuterol dosage. While many women may have begun at 20mcg per day most, including women and men will find 40mcg per day for 7-14 days to be perfect and once this period has passed simply discontinue use until your next diet is at hand.
In general, Proviron is a relatively inexpensive and easily located product to find. Pharmaceutical grade Proviron is always going to be more expensive than the underground counterpart, but that is the way things go for almost all pharmaceutical products versus UGL-manufactured items. Schering Proviron in particular sells, on average, for around $ per tablet (25mg). Other pharmaceutical brands of Proviron can be lower priced, with some ranging around $ per tablet. Underground grade Proviron is known to be much cheaper for obvious reasons, with some being sold for as low as $ per tablet (25mg). Underground products are not manufactured to any standard, however, and some brands may manufacture tablets in different concentrations (20mg, 25mg, 50mg, or even 100mg), and so it can become quite difficult to gauge and judge current market prices because of this.