A timely message on this thread prompted DW Ashcombe to pass on the link.
From time to time my back gives up, invariably due to abuse in one form or another. In this case I think I stretched across the mower to adjust something, while holding onto the handle that keeps the motor running. A couple of days later the pain began. It makes me shout loudly. I had been prescribed Tramadol previously and have a pile of out-of-date tabs. The first few doses were indeed a bit floaty-making, but as I wasn't driving I quite enjoyed it. I had no nausea, but constipation looms. Dosage is up to 8 per day, 37.5mg Tramadol in a tab with 325mg of paracetamol.
After being taken to A&E in the small hours today, where I had a 20-minute drip, apparently of valium, I now have a prescription that includes Tramadol, for quite a period - my friend has the prescription and will get it fulfilled today. I have also to get an MRI scan done.