Pet medicine buggy

Alright, so... my cats were 'feeling sick,' so I gave one of them universal pet medicine. However, then it said that the cat wasn't feeling sick, so the medicine only made it more hungry. 

And then... well, then he fainted. I gave him medicine because it said he was feeling sick, but then the pop-up said he wasn't sick, the hunger decreased, annnd he fainted.

Perhaps 'feeling sick' is supposed to be something like 'close to getting sick,' but in that case it would be great if it could be worded more clearly so there's no confusion ^^