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Starting Nov. 12, South Korea will allow people to bring up to three months' supply of obesity drugs such as Mounjaro and Wegovy purchased abroad with a legal prescription, Yonhap reports. The Ministry of Food and Drug Safety relaxed rules on carrying in medicines bought for self-treatment, after consulting with the customs service, and demand is expected to rise from people seeking cheaper prices in Japan and China. The move comes as one in 10 Korean adults used or was prescribed obesity drugs in the past year, according to a Korea Times report, and as the ministry separately warned of a rare vision-loss risk linked to GLP-1 drugs. Korea's first homegrown obesity treatment has also entered the market, challenging Mounjaro on price, Business Korea reports.