thrush

Sammy has thrush.  im typing with my left hand only because he is finally napping.  poor baby.  he has been so cranky and sad the last few days.  at least i know why.  ive only dealt with thrush once and ellie was much older.  we have the nytatin prescriptions for both of us.  any suggestions? do i need the purple stuff? im noy part of any bf or parenting comms any more but would love suggestions.