All national dailies wrote that criticism is growing within the medical community of Osaka Governor Yoshimura’s announcement on Tuesday on the results of research that he asserted suggest the effectiveness of povidone iodine mouthwash in reducing COVID-19 infection. Experts reportedly stressed that there is no solid scientific proof of his claim and took issue with a leading politician openly recommending the use of a medical product without comprehending its potential adverse effects. The papers added that such products have already disappeared from store shelves across the nation and are now being sold online at exorbitant prices.