i do it a couple times a week, but that isnt safe. it wont kill you if you do it more often but its not good for you, mentaly. it can cause depression, diffuclty learning and remembering, and possibly brain lessions resulting from repeated high dose trips over an extended period of time. So its best with dxm and any other dissacociative drug to limit your use to a 2-3 times a month, ive been doing it for 6months about 4-5x's a week i find its a little difficult to remember things and my thoughts feel kind of clouded. But i heard of people doing it for like 2yrs. everyday and after staying off for a few months returning to their normal thought processes. Id say just dont do it to much(like me) and youll be fine, 2 days in a row isnt a big deal, just take a break for a little while afterwards.