When DD was younger in 1st and 2nd grade we did have some success Oregamax and Oregonol and Olive Leaf Extract. Uvi Ursi also works too, though limited. We have used caprylic for yeast but when we're on Zithromax we need to use Nystatin. It is important to rotate herbals, not give the same one all the time. I'm not the biggest expert. There is a notion that the body gets used to them. When she was younger we could knock out or greatly reduce her first or second exposures in the school year, usually November or December with the herbals. The Winter exposures were still pretty bad. That was before we could get a doc to believe in her symptoms = PANDAS and agree to treat. She's in 5th Grade now. We now treat with Zithromax and keep those herbs on board to deal with other things besides the bacteria, like yeast.