It is not safe to use ofloxacin for longer eriond. It may also help the sore throat as an antibiotic. However it is not specific for throat infection. After giving oflox for two days, let me know the progress. I shall suggest better antibiotic. Anyway for the time being, for pain give meftal syrup 5 ml thrice. Reply with your city. It is necessary to know your place ( weather there) take care.