Sir.i Am Suffering Pain In My Right Knee When Walking

Sir.i am suffering pain in my right knee when walking or running . basically I am a footballer. Last month I took mri scan, doctor said to me, there is no major problems you have. There is a few swelling inside.He priscribe to me this medicine. (Cartirise. It's a product of baryton pharma pvt Ltd. India.).Sir please inform me .If you have any suggestions. because still I am suffering this pain.
Thankfully. ....