Hi Doctor, After 2 Months Of My Root Canal Treatment

Hi doctor, after 2 months of my root canal treatment and capping I am having pain in my tooth..as per my dentist their is sign of infection in my tooth, no plus etc. But still their is pain, he has suggested to take wysolene 5 mg for twice a day for 5 days plus forte plus trice a day for 5 days. Pls suggest if is ok to take these medicines. And does this have any side effects.