My mother, 49 years old, is suffering from LBP and LS Spine problem related to slip disc at back side. She is having Zerodol TH 4 1 tab BD daily but pain is there. Also she has OA in both knees and she is having pain in that. Having Cartigen Duo 1 tab OD and Nusam 400 1 tab OD. But pain is continuing. She can't walk properly. She is also obese. Please advise and opine. X - ray shows advanced OA and need to replace knees. But we are not willing to do it due to some problems of her. Please advise. Doctors advised to take Gabapin 100 mg 1 tab OD.