Well, since I can no longer smoking marijuana I've decided to try other things for the time being, today is my day that I will be trying DXM. I've acquired Robitussin Cough and Cold. (Chlorpheniramine Maleate 2mg and Dextromethorphan 15mg for every 5ml) Now, my question is, will the other ingredient hurt me? I tried to find the product with ONLY dxm as the active ingredient, but they didn't have any, and I didn't feel like spending nearly $15 on delsym. I'll be induring around 400mg of dxm, hopefully I'll have a pleasent experience !