ok heres my take on SP. Used it and combinations with it in for years, usually around 1000 - 2000 mg's, and i also did a year with just beta sitosterol, which is supposibly the active chemical in it.
firstly, the problem is because it has been shown in small studies to shrink the prostate in case of benign prostatic hyperplasia, and because finasterides first use was for that, (and still is at 5mg), then people have extrapolated that to mean that sp therefore must also block dht, and therefore stop male pattern baldness.
But, SP might work for enlarged prostate in a totally different way, other than blocking DHT, and even if it does work the same way, it doesnt mean it will block dht in hair follicles. So these myths perpetuated no doubt by SP companies, have all these companies claiming 'sp is equivalent to finasteride, but because it is natural it has no side effects'.
BS BS BS bullshit!
It hasnt been proven to work like finasteride, it hasnt been proven to have no side effects, and if it does block the conversion of T into DHT, then it should have the same side effects. Being natural doesnt mean there are no side effects.
When i used it i got nothing but shedding that never stopped, until i stopped using it, and no regrowth, and no noticeable change in hair status, other than less hair.
Having said that some people claims it works for them, and i believe them ( although there is so much corrupt testimonials, its hard to know which ones to believe) The problem, is u dont know if it will work, and most probably youll just keep shedding. And youll never know the correct dose cos of lack of studies, so u might just be taking the incorrect dose.
better off using finasteride where u know the dose, u know the response, and u know wat to expect with side effects.