I have arthritis in all my joints and have what they call whole body OE ..Glucosamine has done jack **** for me !
Don't waste your money .Cortisone injections will give you much more relief although you can only have so many .They can also do arthoroscopy which is basically a wash out procedure to get rid of all the loose bits of cartilage floating around and they shave of any knobbly bits .It's the loss of cartilage which makes the bones rub together which gives the pain .Pester your GP !
In the meantime look at your diet ,try gentle exercise ,swimming is good and have a look
here
Cocodamol is a good pain relief as nanny won't let us have Coproxymol any more and Feldene Gel which you can buy over the counter is good too . Nsaids are no good to me either and they have tried me on a whole range of them .I sympathise and hope you can soon get some relief from it .