I just recently used Tadalafil for the first time and was pleased with the results. I researched the drug before committing to taking it, and came across several reputable websites that stated Tadalafil raises free testosterone, on average, by 24%. It also lowers estrogen, on average, by 15%. These stats are based on clinical studies over the period of a year. My question is, has anyone had any experience using Tadalafil during their entire cycle?