My dad's been dealing with Pulmonary TB, and the doctor put him on Forecox tablets. He's taking two a day for 70 days, and he's already 40 days in. Lately, he's been complaining about pain in his knees and hands. Could this be a side effect? Also, what kind of diet should he be on, and are there any specific precautions he needs to follow?

Thats unusual,visit General Physician for appropriate approach.and maintain balanced diet and healthy lifestyle