Thanks for all the information, a great help, and plenty to be getting on with.

I've managed to get some Epsom Salts and some B12 this morning, although its with a B complex but its all I could find and well worth a try, the magnesium for oral use will have to wait until I can get into town as the chemists didn't have any (the trouble of living in a rural area) but at least I got some new leads to try out

I did swap the Propranolol to the morning earlier in the week so its early days on that one and I'll see how it all pans out over the next month or so with that, meanwhile I've got a lot of information to read through courtesy of the links and no doubt will have a myriad of questions...