[greys0ul]

Diphenhydramine isn't great for your liver, but occasionally taking a 25-50mg dose shouldn't be an issue unless you have preexisting issues(not a doctor, this isn't medical advice, etc.)

As far as spiders, monsters, and whatnot, http://erowid.org has good write ups in the experiences section for it.

I've also heard them called "bennies", but you're probably not getting OTC benadryl off the street, so I can't see there being much confusion.