i wanna try robotripping too so i cant blame u for wanting that but i dont think benadryl would be any fun. i never did it but the experiences i heard just sound miserable. i get wanting to get high for cheap and i dont think these other ppl in the replies r considering that. if that wasnt a problem id recommend acid shrooms or molly. nd u probably already smoe weed. so tbh if all i said was correct nd ur looking for something cheap,,, id do robo over benadryl