The decreased water retention is something I still don't know about. When I took Triazole it was in the dead of summer so it was hot as balls. I was sweating anyways, but a lot more than everyone else. Erase makes me sweat as well, but as I end my 8 weeks on it (the past 4 being Erase Pro actually), I definitely haven't sweated as much. But the temp also hasn't been as high. I dunno, either way, they both do a kickass job. Can't go wrong with either imo.