using antibiotics on a perfectly "healthy" person makes you "sick". although i'd have to admit that it would make some sense (side effects, intolerances, allergic shock etc) this needs to be tweaked. there needs to be a distinction made between "sick" and "sick".
maybe use something like "don't feel well", "feel uneasy" or use whole new status messages after using antibiotics, alcohol tincture, charcoal tablets or vitamins such as
"...your body responds well to xyz"
"...your body responds badly to xyz"