This stuff is magic. My husband suffered from chronic canker sores (the size of dimes all over his mouth) that would last for days and leave him in such severe pain that he would require prescription pain killers just to go about normal business. After YEARS of trying EVERYTHING to permanently do away with, or quickly heal, or at least effectively minimize the pain with NOTHING working, Silver Guard was recommended to us and we are EVER so grateful. All my husband has to do is, at the first sign of an oncoming outbreak, take a swig of this solution, swish it around in his mouth and he COMPLETELY STAVES OFF the outbreak! Despite the high price, we will continue purchase this miracle in a bottle. Love, love, love! -KF