vega5 wrote:I'm not an expert but this much I know.
Then let me help extend your knowledge a little bit. structurally kessar and clomid are virtually identical. If I can get these silly pictures to upload I will show you. Both clomid and kessar are selective estrogen receptor modulators (SERMs). This means they both bind the estrogen receptor and stop estrogen from binding it. Steroid users use SERMs both to stop estrogen related side effects and to bring back testosterone production (correcting the HPTA). The way that SERMs increase testosterone levels is by tricking the body into thinking there is no estrogen (because the receptors are blocked). The body then reacts by producing LH to produce more testosterone for conversion to estrogen by aromatase.
Although they both perform the same function kessar binds the estrogen receptor much more potently than clomid, making it the better choice for both blocking estrogen related side effects, and for bringing back testosterone production (increasing testicle size). In fact studies show that 150mg clomid increases serum testosterone by 150%, while 20mg kessar does the same thing. Thus 20mg kessar is as effecive as 150mg clomid in raising testosterone levels during PCT.
Unfortunately today many steroid supplier would not like you to know this information because they can make much more money off marketing clomid for PCT. Although clomid was once important for PCT it is now far overshadowed by kessar!