dont beleive that shit. most likely they've died from either not drinking water, or drinking too much water.

1 pill will be fine. take sips of water occassionally, you'll know when. for first time, it will prolly take like 40 mins to an hour to kick in, but you'll start feeling it. have straws(my preference) or pacifiers for the need to chew. have friends and music. but most importantly, have fun.