When used as an ancillary, it can be taken by male athletes and bodybuilders all throughout their cycle length at 50 – 100mg per day, as there is no limit to how long it can be utilized for. Some individuals prefer to also run Proviron as a PCT (Post Cycle Therapy) drug in order to reduce Estrogen levels and boost fertility. Although this can be done, there are much better compounds with similar (and stronger) effects for PCT. When the risk of even weak endogenous Testosterone suppression is thrown into the mix with Proviron, it is advised to avoid the use of Proviron for PCT purposes unless there are no other options available. During a period in which individuals are attempting to recover their natural endogenous Testosterone levels, any threat no matter how minimal to endogenous Testosterone production should be unwelcome and avoided at all costs.
Proviron was popularized years ago as an anti-estrogen because it is has a high affinity to bind to the aromatase enzyme, so anabolic steroid (AS) users could use it to serve as their AI (aromatase inhibitor) replacement. Bodybuilders were using it during post cycle therapy (PCT); unfortunately, studies have shown proviron does suppress LH (luteinizing hormone) – in some cases. As a result, high proviron dosage can prevent the pituitary gland from recovering after a steroid cycle. Some users insist proviron does not suppress the HPTA when used in PCT or during a bridge; however, this is up for debate. As a side note, some studies support long term use of proviron at high dosages without serious suppression. The science supports proviron use for PCT but not in every case.