Flagyl Side Effects: vagina rashes and itchy. can't sleep. nausea, the hell with this http://www.medications.com/effect/view/29911 vagina rashes and itchy. can't sleep. nausea, the hell with this medicine, i never expect that everyday will be a horrible day for me. it seems like things are getting worst every time I'm taking this drug. hello, i seem to be having the same issue. i took flagyl in a sin Sun, 19 Jul 2009 00:13:20 -0400 http://www.medications.com/effect/view/29911?item=21654 hello, i seem to be having the same issue. i took flagyl in a single dose and about 2 or 3 days later i had intense burning itching rash ect. it has now been a week and although the symptoms are not as bad, there still there. how long did you experience th http://www.medications.com/effect/view/29911?item=21654