I took Paxlovid when I got COVID. Started taking it the day I tested positive. Worked great initially - I was very tired for around a week, sleeping for most of the first two days, but didn’t feel completely terrible.
However, a day or two after I had finished taking it, the symptoms came back much worse and I was pretty sick for another week and a half. Apparently rebound/recurrence of symptoms happens in around one in five people that take Paxlovid.