But there is something to be said for that though, at least it's not something badly wrong they've found, if tests have been done and such?
I find Voltarol gel and Ibuleve gels quite good, but more for muscles than for joints. Quite pricey too. You can get cheaper versions at Pound Shops and heat and cold pads/sprays/gels and supports.
It depends what is up with your joints as to whether anti-inflammatories will help though. Have you tried paracetamol or anything like that? Do you know the cause?