opcon-a or napcon-a
sttomassmoker Reviewed by sttomassmoker on . Visine tetrahydrozoline buzzkill? I have heard rumors before of visine "killing" one's high, i looked on the back of the bottle and it said it contained Tetrahydrozoline. i am aware that many there are many chemicals that start with Tetrahydro, but i know that countless other brands of eye drops that say redness relief on the bottle in plain sight have an entirely different chemical. most of the time those brands dont do crap! i love walking into work thinking im good with my ol bottle of generic eyedrops cause i couldnt get Rating: 5