I am currently taking diflucan for a vaginal yeast infection. I have taken diflucan in the past ( like a year and half ago) and I had some nasty side effects to it. My lips on my mouth get red and burny and my throat and mouth will burn and I will get canker sores In my mouth and throat. I tried using the vaginal cream(terazol), but that inflamed my whole vagina, it was awful. So now I went to doctor and she said try the diflucan again, only this time I am trying the liquid form hoping I will tolerate it better than the pill. It is only suppose to take one dose to clear up the infection, but she said I may have to take one more dose three days later. I also take florastor to help with my intestinal issues since I have to be on low dose augmentin to prevent UTI's. This sucks since Diflucan is an antifungal and will likely kill off the floratsor I take being it is a form of yeast! There is a remedy that can help with oral yeast. Try cinnamon. This is a natural yeast klller as well as yougurt in the mouth. I know I had bought this cereal called cinnamon chex and after I started eating them I noticed my tongue looked a lot healthier. I then found out cinnamon kills yeast. Go figure.