How do you prevent oral thrush caused by the inhalers? I started with oral Candida a few years ago which then spread into the esophagus and was only recently discovered by a scope. I was told it was probably caused by my inhalers, I took the brown preventer 2 puffs twice a day and the blue inhaler as needed. I am now not taking any inhalers unless I feell I need to because I'm scared of it returning.