Maybe: It will help to keep your mouth and throat clean and potentially help with the pain. It also may help to draw some of the fluid from the vesicles. There is no proven benefit in any clinical trials, but it is unlikely to be harmful. Children less than 8 are likely to be unable to gargle. The combination is 1/2 tsp salt per 8 ounces of water. All the best.
Answered 11/30/2014
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