You will definitely not starve to death fasting for even a week. An I would imagine it would do wonders against a parasitic entity like candida. I would think any kind of antifungal and any kind of probiotic would be fine while fasting, the antifungal stuff might work better, the probiotic might work worse. I don't know anything about inulin either other than what I have read from Sally Fallon and the woman who developed the GAPS diet, so that was just a guess from me. As far as fasting and consumption, the general rule that seems to make it fasting is to limit solid food intake substantially (maybe eating very limited solid foods during a couple hour window). Other than that there are lots of fasts that focus on ingesting certain liquids (tea, juice, lemonade, etc...) so that is kind of up to you. If you have never done it before and are worried about your will power to do it I would definitely recommend planning to ingest some liquid that isn't water just for variety of taste. If you have a good herb shop near you they might even be able to recommend some teas that might help in your quest.