Yes you can get anything over the counter including penicillin. Chemist opposite Migros in Fethiye town centre speaks good English and will give you excellent advice. If you know what you want the Chemists at the back of the hospital in Fethiye which is the very last turn off going passed the front of the hospital (It's the one that the sausage shop was behind) Is a good Chemist, they don't speak a lot of English but, as I say if you know what you need they are great.