Ephedra commonly nausea, especially when mixed with caffine, it is one of the known side effects.
As for the other thread, ephedrine is now illegal in the states, Jan. 2004, so you are unlikely to get a lot of public endorsement/discussion on the internet, similar to asking about anabolic/angrogenic steroids except on dedicated groups.
The main problem I have with this approach to
weight loss, isn't that it doesn't work, the high thermogenic effect of ephedrine can not be disputed, nor its ability to increase intensity of exercise, however it doesn't address the other issues of weight loss and thus can lead to a high turnover
weight gain in the maintenance phase of the diet, unless you keep using it of course.
It is also addictive and like many of such drugs can generate severe withdrawls.
-Cliff