You will probably get the most benefit from taking the 1/2 the pills in the morning and half at night on an empty stomach.
No accurate tests to date. My doc just ruled out a few other things and I was fortunate enough to have a doc who isn't dimwitted (sorry but I've been to all the jerkies and paid 1000's just to get no help at all).
I need Diflucan meds because I have a high estrogen count in my body (estrogen has a way of keeping sugars near the lining of the gut which in turn feeds the fungus).
Some get instant relief from diet and probiotics alone.

I also have an underactive thyroid as a result of my high estrogen and this hinders my immune system from keeping the yeast in my gut in check.