a) Any drug with very low toxicity, doesn't develop toxic degradation goods, doesn't have severe adverse reactions that are known or warned in opposition to by the whole world Health Business, regulatory authorities of Vietnam or foreign countries, and will bring about any of the next adverse outcomes:  https://nh-thu-c55443.mpeblog.com/58280229/thực-phẩm-chức-năng-things-to-know-before-you-buy