How can improve my osteoarthritis?

Many things.: Exercise regularly. Take meds for the pain ( usually Acetaminophen and a nonsteroidal anti-inflammatory). Take meds before pain inducing activities. Consider injections of meds or surgery. Try msm/ glucosamine/chondoitin. Go to physical therapy.

Varies: It depends on which joint, severity of the problem. Try to stay active. Medication, physical therapy, exercise (especially aerobic) can all help. Water exercise is especially good for those with arthritis in the legs. Injections and surgery can be considered for more severe pain.

NSAIDs: Maybe helpful. Also consider supplements like glucosamine/chondroitin. Lastly if not improving consider how platelet therapy or stem cells can be helpful for you. Check out Regenexx.Com