It was 500mg four times a day for nitrofuantoin and then the same dosage for ciprofloxacillin and finally the same dosage for co-amoxiclav which finally cleared it. I was really ill though from the infection before I knew what it was. I'd felt off for a couple of weeks with what felt like cystitis starting and then it went away but I felt tired and just a bit "off". I then developed a slight fever (controlled by paracetamol) and two days later I had an attack of rigors which is what made me go to the GP. I was put onto nitrofuantoin (250mg four times a day) as a precaution and a sample was sent off. The doc phoned me the next day as a reading which should have been under 300 had registered 1000. They upped the dose to the 500mg and I had to send off another sample a week later which showed the infection was still really entrenched so they swapped to the cipro etc etc. It took, in all, from September to December to finally clear the infection totally. Not something I want to go through again which is why I probably drive my GP's surgery mad by phoning to speak to a doc every time I get similar "almost cystitis but not quite" symptoms.
An upper UTI is totally different to a lower one. Different symptoms and harder to shift.
Taz x