this isnt scientific, just heresay...

some people's eyes turn red because of pressure being released from the weed (which is why it works so great for glaucoma)

about cottonmouth, i think it's just because some of your body systems slow down due to weeds effects on the CNS (this i absolutely pulled out of my ass, someone correct me please if it's wrong lol)
AlwaysBlazed Reviewed by AlwaysBlazed on . Red eye & Cottonmouth I figured that this may be the appropriate place to ask the science lovin' people a couple questions. I like to consider myself a cannabis enthusiast and I definetly enjoy burning the herb. The only (I don't want to say problem) thing that I wonder about when I get stoned is what goes on, scientifically with the body, when someone gets red eyes and cottonmouth. Is it just forgetting to blink? Do I stop salivating when I smoke pot? Maybe someone can find a way to better illustrate to me what Rating: 5