Het verminderd de gains, maar (cut&paste uit BC's beroemde proza op
http://www.bodybuilding.com/fun/catprov.htm):
The second use is in enhancing the potency of testosterone. Testosterone in the body at normal physiological levels is mostly inactive. As much as 97 or 98 percent of testosterone in that amount is bound to coïtus hormone binding globulin (SHBG) and albumin, two proteins. In such a form testosterone is mostly inactive. But as with the aromatase enzyme, DHT has a higher affinity for these proteins than testosterone does, so when administered simultaneously the mesterolone will attach to the SHBG and albumin, leaving larger amounts of free testosterone to mediate anabolic activities such as protein synthesis. Another way in which it helps to increase gains. Its also another part of the equation that makes it ineffective on its own, as binding to these proteins too, would render it a non-issue at the androgen receptor.
In geval van test zouden de nadelen dus nog wel mee moeten vallen. Gevoelsmatig zou ik zeggen dat je best wel proviron in de laatste 2 weken van je kuur zou kunnen gebruiken, naast wellicht incidenteel gebruik tijdens de rest van je kuur als je echt een bolle kop krijgt. Daarentegen, ipv 2 weken aan het eind, zou ik toch weer winny preferen (week of 5-6) om een hardere look te krijgen....?