I'm all about trying everything once. I've rolled, taken shrooms, etc, and none of that is available right now. A foot long San Pedro Cactus is 25 bucks, DXM was 7 and i'm broke. I have never really done this whole DXM thing. Rather than use the search, I thought I would ask a simple educated question about what i've got. I bought a 20 pack of Adult Robitussin DXM HBr containing pills. The active ingredient is 15% DXM per pill, with the inactive ingredients ranging from purified water to glycerine. There is no acetametaphin or guaifenin. Am I safe to take all 20 at once? Is that amount a good first trip? What if I only took maybe 4 or 5 at a time over the course of an hour or so? I guess what my DXM-Newb ass is asking is..what now? How much, how often, any risk? EXACT brand of gelcaps are the non-drowsy robitussin cough suppressant pills.