Experiences - OTC sleeping pills and OEV's/CEV's?

[William_Again]

Ok let me start this off by saying that I work night jobs and have for a while and I take OTC sleeping pills as well as melatonin to help me sleep (otherwise I would be up for days...literally, my record for a drug free awake binge is 52 hours). Anyways after fooling around with various RC's and continuing to take these otc sleep aids I started to notice that even with taking one pill after it kicks in I have mild OEV's and definate CEV's as well as enhanced hearing. I am wondering if anyone else has noticed this and if it is possible to achieve greater visuals with more pills (or is this to dangerous)? The active chem in the pills is Diphenhydamine HCL 50 mg.