So is there any negative to using a SERM for pct to completely avoid negative side effects like gyno and such? Is there really any reason not to use a serm along with an otc pct?
yes, for the most part SERMs are more liver toxic than the compound you are taking to begin with, most of them have other weird side effects and also generally you are likely to buy them as a research chemical so you have no real idea of purity, what is even in the container at all, or strength...
All that said, used appropriately they have their place, I am just not a fan of the huge doses used to jumpstart HTPA, i'd rather see a person start herbal boosters the last week / 10 days of their cycle (to allow it to build up) and then a low dose serm thru pct.
Really moreso the way to tell for sure what you need is to know what your normal test/e2 blood levels are pre-cycle, and then get another blood test at end of cycle and that will determine your pct needs. but its not realistic sadly