Shionogi & Co. fell the most in more than two months after health experts postponed a decision on whether to recommend the company’s experimental Covid-19 treatment for use in Japan. Its South Korean partner, Il Dong Pharmaceutical Co.. also plunged.
Shionogi dropped 5.6% in Tokyo, while Il Dong Pharma was down 17% in Seoul on Thursday. It was their biggest declines since April 13, when questions were raised about the medicine’s impact on fetal development.