FWIW, here's a more comprehensive overview of the literature in this area, covering not just povidone iodine but also hydrogen peroxide and cetylpyridinium chlo

FWIW, here's a more comprehensive overview of the literature in this area, covering not just povidone iodine but also hydrogen peroxide and cetylpyridinium chloride (CPC). https://pubmed.ncbi.nlm.nih.gov/33865974/ https://pubmed.ncbi.nlm.nih.gov/33865974/ I remember seeing articles about this even earlier, very early in the pandemic. I honestly haven't made up my mind and am not taking a position. I'll just add that I've been using CPC mouthwashes for years because of their general effects, and this doesn't make me any less likely to keep using them. What seems odd to me is that they seem to have become less common in the last several months than they used to be. Not sure why. P.S. A lot of this info seems to be behind paywalls. If anyone has a better URL to use, I'd appreciate that.