So this morning I took 20mg oxy neo and because my tolerance is so high I barely feel it it. So I got some DXM to try increase the effects. Now Im pretty sure to get best results I should of took the dxm before hand but its too late for that. How much dxm should I take to boost the opiate? I took 105mg thinking that would be the right ammount to do the job but not get too effed up from the dxm. Thanks for any response 
