Joint pains. Hi doctor, this is!

Hi Doctor, This is regarding my mother, She has been suffering from joint pains on hands and legs. At times her hands become stiff and unable to carry any item. We visited some doctors they suspected it as rheumatoid arthritis and prescribed some medicine, but it is not getting cured, rather giving some side effects. The medicine acts as a temporary pain reliever and she is unable to get rid of the pain completely. It's like if the medicine is not used for a day, she is feeling severe pain. It's been almost 2 months she started using the medicine but not a good relief though. We have visited  general physician and Neurologist also. But the problem still persists . Could you please suggest. I am attaching the prescription and reports. Really need your help to diagnose the problem and cure permanently. Thanks you in advance Siva Akella.