What's been helping me the most is peppermint tea, at least 2 cups a day (has antifungal and antibacterial properties), coconut oil (has antifungal, antibacterial, antiviral properties), and cod liver oil (has vitamin A which boosts the immune system to help fight off pathogens).
Also, before I started peppermint tea, I discovered black tea helped a lot too. It contains tannins which are antifungal and antibacterial. I switched to peppermint, which works just as well if not better, because I prefer to avoid caffeine.
Probiotics might help too... have you tried them? I'd recommend just a plain acidophilus supplement since some people with intestinal dysbiosis have trouble with other strains.