There's a new drugstore in town. South Star Drug recently opened shop in Calbayog. It is located on on the corner of Rueda Street and Magsaysay Boulevard. Yup, it's the same address (or should I say street corner) where Mercury Drug (the one which also sells groceries) is located. From what I heard, it seems like the corporate credo of South Star is something which says "where Mercury is, there we will be".
My apologies for the quality of the pictures, I used my tab to take these.