reumatoid arthritis

I have osteoarthritis in the neck and after taking just two  200g Broline tablets have found great improvement, how long should I take the tablets for?  Also my brother has RA would it be safe for him to try Broline?  Neither of us are taking any other medication although I do occasionally have heart palpitations which my doctor has put down to menopausal problems.  Can you advise.

Thanks

Linda Smith