GP Nolva is an oral preparation manufactured by Geneza Pharmaceuticals containing 20mg of the substance Tamoxifen. GP Nolva is most often called "Nolvadex" by bodybuilders. GP Nolva is not a steroid, rather a selective estrogen blocker. While GP Nolva doesn't prevent the buildup of estrogen in the body, it does prevent it from acting on certain receptors, most notably, those located in the nipples. This has great benefits to bodybuilders, because this is the area in which "gyno" occurs during the use of aromatizing steroids such as testosterone. GP Nolva offers another great benefit to bodybuilders due to the fact that it can greatly increase the amount of testosterone that the body makes by stimulating LH production. This makes the drug a great choice for PCT. While the drug has many benefits concerning estrogen buildup in the body, you should know that it can have adverse effects towards progesterone related steroids. Because of this, it's recommended bodybuilders not to use GP Nolva in conjunction with steroids such as Deca or Trenbolone. Remember that GP Nolva doesn't reduce estrogen throughout the body, and therefore bodybuilders looking to reduce water retention and bloat should look towards true estrogen blockers such as Anastrozole or Exemestane. Bodybuilders often use GP Nolva in doses of 25-75mgs a day throughout cycle duration where gyno is a concern. Those looking to incorporate GP Nolva into their PCT program will typically run the substance at similar doses for 4-6 upon the discontinued use of all steroids. Users may also choose to add proviron and/or HCG to their PCT protocol.