The pill is an antiviral called ensitrelvir. It sounds similar to Paxlovid. Both are protease inhibitors which slow/disrupt viral replication. It may help with other symptoms.
In an earlier nature.com post..
"participants who took 125-milligram ensitrelvir pills recovered from five specific symptoms — stuffy or runny nose, sore throat, cough, feeling hot or feverish and low energy or tiredness — about 24 hours earlier than did those in the control group"
I got covid back in May 21, lost sense of taste for around 6 months, than had horrible congestion and insomnia and fatigue since. The insomnia hasn't gone away yet. I got covid again a few weeks ago, and was given some antivirals (Molnupiravir), I recovered super quick on those, and for the days I was taking it I had the best sleep I've had in years. But after the course ended the insomnia returned.
In an earlier nature.com post.. "participants who took 125-milligram ensitrelvir pills recovered from five specific symptoms — stuffy or runny nose, sore throat, cough, feeling hot or feverish and low energy or tiredness — about 24 hours earlier than did those in the control group"
https://www.nature.com/articles/d41586-023-00548-6