An additional 11,000 doses of the anti-COVID pill developed by Pfizer are scheduled to arrive in the country on Sunday.
South Korea has already received 21,000 doses of Paxlovid.
They are a part of a direct contract with the American pharmaceutical company for over one million doses.
The Korea Disease Control and Prevention Agency said Wednesday that eligibility for the pills will be expanded.
Authorities said they may lower the age of eligibility for the pills to include people in their 50s.
Currently, the oral coronavirus treatment is being offered to patients aged 60 and older.