A few weeks ago, I took approximately 200 mg of the extended release version of dxm, and got a very nice effect (first time doing any drug) then a few days ago, I took 350 mg of dxm hbr, hoping for a stronger, but shorter lasting trip. I only felt approx 2/3 of what I felt on the first trip. I don't know how this is possible, since the extended release version is supposed to be so much weaker. Could it have just been the mood I was in? That was the only thing that really changed from the 2 trips. The one we're I took the ER version I was very excited and happy, and for the second trip I felt much more neutral (not sad, not happy, not nervous, not really anything). Both were taken on an empty stomach.