And to be clear, I mean flu/bad cold, not cancer/chronic severe sickness.

We keep our medicine cabinet stocked for ourselves (obviously) but also share out all over-the-counter medicines with our sick guests. If someone seems really knocked out, I will make them tea (if I'm at home), and/or broth (my powdered bone broth) if they want. I'll also show them where the thermometer is, if they want to use it, and the heating pads/ice packs/etc. I'll also make sure they're aware of where the local urgent care is, and if I've barely seen someone for a whole day, I will knock on their door eventually and check and make sure they're not literally dying in the bedroom.

I did have one youngish guest years ago who I ended up taking to urgent care because she got a killer flu and I was really concerned for her. She was fine, but it took over a week for her to actually get better, and I willingly did a fair bit of nurse-maiding for her, because she was new to my city (just moved for a job) and was sick as hell and I just felt terrible for her. She (without asking) went grocery shopping for me and basically "paid back" all the soups and broths and bread/crackers I bought for her while she was down and out. But that was a pretty extreme example and it's only happened once in 10 years that I've been doing AirBnB/renting out a room.

Normally, the way I handle sick guests works great. But I recently had a guest that seemed to have the idea that I would be...really caring for them. Like on-call. And this was not a killer flu - in fact, I suspect it may have been more of a hangover than a flu. I cheerful disabused that notion immediately ("I'm so sorry you feel badly! Here is a cup of tea, and I've left several teas on the counter and the hot water heater filled if you need more. I'll see you later. Please feel free to use whatever you need in the medicine cabinet and I'll see you tonight."), and then went about my day.

What about the rest of you hosts? Do you provide medications and such? Make tea? Or just politely sympathize and otherwise get on with your day?