meds that everyone must have at home are tonic salt, wonder tonic, and some furan or similar.
I have a whole host of stuff including:
salt,
furan,
malachite green,
acriflavine,
copper sulfate soln,
stress coat,
meth blue,
quinine mixed meds,
and a whole load of other stuff.
I hope I never have to use any of it, but always pays to be prepared.