There are two pharmacists on Spetses, both speak English fluently and are able to help you with advice for non-emergency treatment if you don't need to visit the hospital or doctor. They stock a wide range of medicines and medical supplies and are happy to translate instructions. It is possible to buy antibiotics from the pharmacies in Greece without prescription and if you know what you normally have in your home country, they are normally able to find the alternative brand name in Greek.