GP Proviron is an oral steroid manufactured by Geneza Pharmaceuticals that contains 25mg of the hormone Mesterolone per tablet. Today GP Proviron is very popular among bodybuilders. While this steroid is not anabolic, it is highly androgenic. Because of this, GP Proviron is capable of giving the muscles a harder, more defined look. GP Proviron is also a noted estrogen blocker. GP Proviron may be used in conjunction with steroids that aromatize in order to help prevent estrogen related side effects. Another positive effect of GP Proviron is that it greatly reduces SHBG in the body. This frees up other hormones being used and makes them much more effective. Its high androgenic properties make it a very good substance for maintaining sex drive. This also makes GP Proviron a very good choice to add into one's PCT program. GP Proviron will aid in keeping androgen levels high while allowing the body's own natural testosterone production to come back. GP Proviron is very mild on the liver, and thus, liver damage is not a concern while using this substance. Bodybuilders often incorporate GP Proviron into all of their cycles, and also into their PCT programs. When stacked with testosterone, it will aid in blocking estrogen while increasing androgen, and also allowing the testosterone to be more abundant in the body. With this wide range of benefits associated with its addition to the cycle, it's no wonder that this drug has gained so much popularity. The majority of male users will find that dosing in the range of 25 - 100mg per day of mesterolone will be enough to acheive their desired results. Females most often remain at about 25mg per day, but many have experimented with levels far higher.