Hii I few more information is required to suggest you the best medicines . Do you have any fever ? Any nose block or feeling of phlegm coming to your throat ? Have you tried salt water gargle? If any of these are there , then you may require antibiotics . If not ,antibiotics are totally unnecessary . You can try with some pain medications like paracetamol or ibuprofen , medicated lozenges and gargle initially .

Any other symptoms along it like cough or expectoration?, fever?

betadine gargle three times a day for 5 days. Tablet sinarest two times a day.

Take Tab Azee 500 1 tab od Tab zerodol sp 1 tab bd

U must be having throat infection please take consultation for better evaluation and treatment

Share the pic Looks like throat infection