When I get thrush, I use Mycelex lozenges (generic name is Clotrimazole 10 mg troches) which dissolve on your tongue and are really effective. Unlike Diflucan which courses through your whole body and can do a number on your kidney and liver, this just hits topically on the thrush on your tongue. You might want to call his doctor for a script. You do take like five a day but it dissolves and does the trick with no side effects that I could discern.
Charm