Funny story, I use to work for a pharma company, and we had all that kind of stuff in a secure drug lock up area. You had to log stuff out, it was all very organized. We did a lot of contract manufacturing and we'd get large orders and bring in temp workers. We had a guy one day who ended up getting into the pure caffeine powder, the chemist in the lab figured he'd ingested 800 cola's worth of caffeine. Like you said, not going to kill you but we sent him to the hospital any ways. And we decided to only allow regular employees to get into that area :)