“Despite vitamin D supplements I continue to have pain in my knees. Why?”

You need an anti-inflammatory. Advil 600 mg 3 times a day should do the trick.

Calcium supplements will not help your knee pain in any way and you're probably wasting your money. I would highly consider consulting with another doctor if your doctor is recommending calcium to treat knee pain. There are lot of better options to manage knee pain.

You probably need more. Need a diagnosis for the pain: OA, internal derangement, then appropriate treatment: injection, synvisc, arthroscopic surgery, open surgery, once a diagnosis is made.

Hello, I’m very happy to answer your question.
There are many causes of knee pain. Vitamin D supplementation is performed for nutritional deficiencies as well as osteoporosis. Osteoporosis typically does not cause knee pain. The dose you are currently taking should adequately treat any deficiency. I would recommend that your primary physician obtain a set of X-rays. A visit to an orthopedic surgeon would also be beneficial. Most common causes of knee pain are arthritis, overuse injuries due to exercise, and traumatic injuries. Certain diseases and infections can also result in painful knees. I hope this will get you started on the road to feeling better.

Vitamin D does not help with pain. It can help strengthen your bones, along with calcium, but has nothing to do with pain control.

You should go back and see your treating physician if your current treatment plan is not helping your knee pain.