Yikes! I grew up in a house full of guns - easy access because you never knew when something was going to need killing- but we were all healthy and happy and not a one of us felt the need for any anti depression or anti psychotic medicine.
If someone started acting all crazy - then it would have been time to lock up all the guns in the gun safe. We had one, the expensive guns were always in there.
As bad as it was for them, one of my friend's other brothers-in-law was talking to his wife on the phone as he drove there from the airport. All of a sudden he hears multiple gunshots, screams, and the phone drops to the floor.
It was a couple of minutes before everything calmed down enough that his wife was able to get back on the line. I cannot even begin to fathom what was going through his mind for those minutes, which probably seemed like eternity.