When you consider the main uses of Proviron (Mesterolone)
you can quickly see how unique this steroid is and also just how
potentially powerful it can be in the right hands: firstly, Proviron has
a stronger affinity for the aromatase enzyme than testosterone itself
does, and testosterone being a steroid that aromatizes brings about a
rise in estrogen levels and the associated side effects.
Mesterolone does the exact opposite to this by strongly binding to the aromatase enzyme so the testosterone or other aromatizing steroids you are using from being affected by that enzyme. This can mitigate the rise in the female estrogen hormone that would otherwise normally happen when you’re using testosterone and other aromatizing steroids in your cycle.
That’s not to say that Mesterolone can completely replace a dedicated aromatase inhibitor drug, but it can certainly contribute to reducing those estrogenic side effects and in cycles where you’re not taking high doses or including very powerful aromatizing steroids, Proviron might in fact be all you need to control estrogen related side effects or at least reduce them to a manageable level.
In any case, Mesterolone Proviron will contribute to gaining that hard and dry look because of its ability to mitigate water retention – and it’s for this main reason that we see Proviron most often used for the purpose of cutting and contest preparation phases where muscle and physique hardening is a top priority.
Another unique action of Proviron is that it can bind to SHBG which in turn prevents testosterone from binding to the sex hormone binding globulin protein. This frees up more testosterone for use by the body, known as free testosterone So the testosterone steroids you’re using along with Mesterolone will be more active and more potent and able to more powerfully undertake the important tasks of protein synthesis as more of the testosterone will be circulating and not binding to SHBG while Proviron is present.