It is an antiacid used for heartburn. The pediatrician I worked for had a special mixture he prescribed for kids with thrush. It's a mixture of Maalox, liquid benadryl and lidocaine. It's called Magic Mouthwash and you doctor can give you a script for it. Maalox coats the mouth, benadryl reduces the inflamation and lidocaine numbs it. You need to go to the doctor so he can make sure that yeast infectioon is all that's going on. BTW yeast infection can spread to your throat as well so go to the doctor! Please!