The most common cause of vulvovaginal candidiasis (yeast infection) is named Candida
albicans. However, up to 10% of cases are caused by Candida
glabrata, a different kind of yeast. C. glabrata usually is resistant to all the "azole" antibiotics, including fluconazole (Diflucan), Tetrazole, and Gynazole. It sometimes responds to nystatin vaginal creams or tablets (Mycostatin, Nilstat, and other brands). Boric acid vaginal capsules also are usually effective.