Hi - re manuka / sugar. It actually helps in wound healing same premise as oral ulcers and thrush. It may or may not work on an individual basis but I found, for me, that it worked way faster than the nystatin, (like 2-3 days) and as for sugar, it is sweet, but not a sugar sweet. The study actually said you could use it without concern for cavities etc, because it is also antibacterial. Therefore it actually worked against plaque which is what damages teeth. It's antiinflammatory/antibacterial/antifungal/and antibiotic in nature...

Just throwing it out there. That said it's an individual choice, some people swear by it - some don't just wanted to clarify fact wise what it's actual properties are.