No problem Jim. I have been prescribed and am using a very expensive drug from the US. There were two possible drugs,one being the one you mentioned, but it was thought that would not work so well in my case. I'm using injection pens of the second one, called 'Humira'. It is, in a way, a 'wonder drug' - when i first started using it, just over 3 years ago, it was marvellous, but now I'm back to being restricted. However, without the drug, by now I'd probably be bent double and unable to use my hands at all, or walk even a few paces.
So, at least it's keeping things in check, to an extent. But if I were a horse - they'd shoot me!
This just arrived - I'm a happy bunny!