IS it possible to die from one pill?

[smokeymcbongwater]

Ok, i've read on erowid thats theres a 1 in a million chance someone can die from mdma, but what id like to know is, is it possible for someone to die from one pill, because it is not mdma in the pill but another drug, because even though losing twenty dollars buying fake mdma is bad, it is much better than dying, and SWIM would much rather just pay 20 dollars for caffeine, or DXM or whatever other drug is put into the pill, than die.