There seems to be a WHOLE LOT of interest in Dextromethorphan on this forum. So I figured I should probably try to help yall out. http://www.dextroverse.org This site will give you all the info you need. It's been mentioned here, but a lot of people still don't know about it. Go to the What Is DXM? section, on the bottom there's a DXM Calculator to tell you according to your body weight, and what plateau you want, how much DXM you should take.