When it comes to maximum Proviron doses, 200mg per day is as far as anyone should ever take it; however, there is rarely a need for such a dosing. First and foremost, it's unlikely you'll receive a greater benefit of any worth above the 100mg to 150mg range. But you will be incurring a large DHT buildup and opening the door to side effects with a far greater risk. Further, there's a chance you may not enjoy the testosterone benefits to such a strong degree, then again you may, but Proviron doses beyond this mark is unadvisable in all cases.
In one small scale clinical trial of depressed patients, an improvement of symptoms which included anxiety, lack of drive and desire was observed.  In patients with dysthymia , unipolar , and bipolar depression significant improvement was observed.  In this series of studies, mesterolone lead to a significant decrease in luteinizing hormone and testosterone levels.  In another study, 100 mg mesterolone cipionate was administered twice monthly.  With regards to plasma testosterone levels, there was no difference between the treated versus untreated group, and baseline luteinizing hormone levels were minimally affected.