Shares of the company closed roughly 3% higher on the news.
The Nikkei newspaper last month cited https://asia.nikkei.com/Spotlight/Coronavirus/Japanese-approval-sought-for-Avigan-to-treat-COVID-19 ministry sources saying approval could be granted to the drug within a month of its application.
Japan has already approved Avigan, known generically as favipiravir, as an emergency flu medicine, which is the subject of at least 16 clinical trials around the world. But concerns remain, as the drug has been shown to cause birth defects in animal studies.
Japan's government has called on Fujifilm to triple national stockpiles of the drug. The company said in a statement it has been working with strategic partners to meet that goal and requests by other countries to supply the drug.
Fujifilm in July signed a deal with India's Dr Reddy's Laboratories and Dubai-based Global Response Aid to sell Avigan for COVID-19 globally, excluding in China, Japan and Russia. The drug has been approved to treat COVID-19 in India and Russia.
Last month, Fujifilm said the late-stage study of 156 COVID-19 patients in Japan showed that symptoms of those treated with Avigan improved after 11.9 days, versus 14.7 days for a placebo group.
Results of the study, conducted by subsidiary Fujifilm Toyama Chemical, were found to be statistically significant.
(Reporting by Chris Gallagher and Sayantani Ghosh; Editing by Stephen Coates, Edwina Gibbs and Shinjini Ganguli)