So, as most of you know, i took 6 or so sleeping pills last night, I think I don't remember maybe 8, well I just got me a bottle of 8oz and 4oz bottles of robitussin for some intense robotripping this weekened but i took those antihistamines and that valium yesterday and documents say to wait 2-6 weeks after you have takin antihistamines to do DXM. Well I wanna Dex tommorow, if I drank shit tons of water today and tommorow do you think it'd be safe to do a 4oz bottle?
you'll probably end up having a slightly more intense trip if the antihistamines are still in your body. nothing is really safe, but people have tried diph+dxm combo's (including myself) and have been fine.