Thanks for posting your query.
Knee pains are not due to side effect of becosule tablets.
Most common reason for knee pain at advanced age is arthritis knee.This can be confirmed by some features which are present in radio-graph or x ray of knee.
To have relief in osteoarthritis
knee,you should do following-
-Start doing exercises for quadriceps muscles.You may learn this from your physiotherapist.
-Start doing warm fomentation with rubber bag over knee for at least 3 times a day.
-Take a good analgesic
-Apply over-the-counter pain creams. Creams and gels available at the drugstore may provide temporary relief from osteoarthritis pain.
-Take diet rich in calcium, vitamin d3
-Avoid squatting movements at knee.
Hope this will helps you. Feel free to ask me if you have any further queries.
Wish you good health. Take care.
Dr Saurabh Gupta.Orthopaedic Surgeon