I have yet to see any University studies using this substance for PCT. I know we've all seen the case study of the one male, but for something who's side effects can include chemical castration, this substance should not be used until more info available. Plus, do you trust that some little Chinaman has dosed it exactly to 100. What if it's 200 by accident. I'll tell you what, chemical castration. Also, this is prescribed for people with prostate cancer. High testosterone is a no no for those people and this substance is used to prevent that. Clomid and HCG has been used forever with great success. I don't mean to sound like a negative nelly but this substance is too new and too dangerous to be using at this point without further evidence. This is not something "just to try."