I tried some 500-1000mg daily but my E was just too high I think to have any effect. I read the same things you did. I tried it as an alternative to Anastrozole.
I'm taking 500mg twice a day. I've only been doing it for about 3 weeks, but so far no boost in libido. I'm taking it with DIM to try and lower my E2, before I go to daily injections or an AI.