The problem here is that often times medicine seeks to remedy the symptoms instead of the problem. Elevated glucose needs to be considered a cause of recurrent candidiasis and then attempts to get one's glucose to adequate levels is needed. If recurrent candidiasis is not caused by diabetes or elevated glucose then spices and herbs such as garlic(you should consult your physician or herbalist to make sure that the amount you are taking does not interfere with any medications you are using.), tea tree oil or even apple cider vinegar(which can be useful in lowering blood sugar) may be able to help assist ones immune system for good health.
Besides, who cures diabetes or elevated blood sugar with an antibiotic?