Zante has a very high standard of healthcare with a modern hospital based in the capital, Zante Town. Each resort has a number of pharmacies farmakio (look out for the green cross sign). Perhaps the most common ailment for visitors to Zante is the mosquito bite as most accommodation is not air conditioned.
As I know, there is a pretty good Theodossi Paraskevi pharmacy. When my friend was there on vacation, he was looking for medical marijuana there because he ran out of full spectrum cbd gummies, and he had to buy something to cope with insomnia. He even has a recipe, but I’m not sure if he managed to find anything there except for the sleeping pills in that pharmacy.