25i for 2 nights straight and was wondering if a 3rd and 4th time will be bad?
Update: what side effects can occur, heard stuff about HTTP
No, that's not a good idea. Treat your body, mind and the substances with respect. The 25X-NBOMe series additional has very strong and long-lasting tolerance, dosing multiple days in a row with these especially is a great way to temporarily or permanently destroy your ability to experience the magic of psychedelics, and to jack up your tolerance for a long time or permanently.
It's not that I haven't done it, in fact I have, for years on end in the past, taken psychedelics multiple days in a row, mutliple times per week, etc. To this day I can't trip like I used to and I need much higher dosages usually, and that was 2006-2008.
Also if you're a person who has a propensity for mental conditions to be triggered by psychedelics (and you don't know if you are until it happens, unless of course it's happened before in which case, stay away from psychedelics altogether), taking them with such frequency will greatly increase those chances.
Also, 25i-NBOMe is just plain a dangerous substance compared to almost any other psychedelic, and you're just asking for trouble.
Besides all that, it's doubtful it would even do much on the 3rd and especially the 4th day as the 25x series produces rapid and intense tolerance.