Knee Joint Pain , Osteo Bi-flex Good Choice ?? Please Help!

My name is alex and I am 15 years old. I injured my knee about half a year ago when doing leg extensions in the weight room using too much weight. I got an MRI to check out my knee injury and the doctor says some of the cartiledge probably wore away.

To get treated i took anti-inflammatories, rested it, and did physical therapy. I can walk and run for a bit with no pain, but if i try to jog long distance i feel joint pain in my knee. I was thinking about taking a supplement to increase the strength in my joint.

My dad bought Osteo Bi-flex. I haven't started taking it yet because I wanted to see if it was safe or not first by checking here. Are there any side effects at all from taking this short-term or long-term? If so, what are they?

If there are side effects, are there any better/safer supplements out there?

thank you very much for your time! I really do appreciate it.