I have been given eyedrops Travatan Z for glacoma......it says it can cause diarreha..my eye dr knows i have ibs d why the heck would he give me this??? he says it is the best one for least side effects..just red eyes, growth of lashes..the causes insert said diarreha>>>>>>i will not take anyting that causes d i will takemy chances of losing sighgt..that is how much i hate diarreha