Medicine was generally provided by doctors before pharmacies came around.
Preventative medicine.
Preventative
Preventative treatment is a measure many doctors take to keep them well before placing patients on medicine. When a patient receives medicine, they are usually already sick.
pharmacy makes and sells medicine
medicine
If you are sick, medicine is of benefit (assuming you can get it). If anyone you know is sick, medicine is of benefit (assuming they can get it). Medicine is of little help to dead people:- so for them it is indifferent. There are no circumstances under which medicine is noxious.
nature
people without healthcare who are sick can receive treatment people without healthcare who are sick can receive treatment
they use medicine because people in this world get sick a lot and they need to get better so they use it
Yes. Also you feel the same when you have sea-sick. You can take a medicine before you must fly so you will not feel sick.
People use them for medicine and food for the sick.
Vaccinations and inoculations.