I have a truly horrid sore throat (thanks for sharing, son) so I took a couple of paracetamol earlier. When I got the sleeve out, one pill was gone. So I know I've taken one dose of two tablets. I can remember thinking about the 4-hour dose timings: 7pm, 11pm, then sleep. But I can't remember if 7pm is when I took the first, or when I was due the next.
This is why #BrainFog is a big deal. It's just paracetamol for a sore throat... this time.