What is the present best line of treatment for rheumatoid arthrithis in a 56 Yrs old Male having multiple small jnt pains, without swelling, RA+ve, increased CPP levels. Treated with: Tab Methotrexate 7.5 mg weekly for 2 weeks then 15 mg weekly, T. Folic Acid 15 mg weekly, T.

Sulfasalazine 500 mg TDS and B-complex OD. What could be the further treatment?