One can get very strong probiotics ( acidolophous and other strains of it help to restore the flora that is imbalanced after antibiotics and some other meds of that type.) Probiotics are wonderful, easy to take, and are readily available at the helath food store, and Trader Joe's. Try to get the ones with about 4 billion + acipholoudus strains in them.  They are lactose free, and are great to take if one has flatulence from foods, stomach aches and bowel upsets.  Follow the directions, and if you need, increase the dose a little at a time.  It will take care of yeast infections if you take enoguh and every day.  The typical reaction if too much acidopholous is taken  will be diahrrhea, and then cut back a little.  This is one of the easiest and most common way to balance the flora and overcome the imbalance of the yeast. Sugars and sweets contribute to yeast infectiosn, so try and get off sugar and white flour for a whle.  I have been using them for 25 years, my daughters do as well, and at the ifrst sign of an infection , start and keep it up daily.  They are good for sthe stomach, gut and digestion.  Giveit a ew days to work.   Good luck   Susie