Don't mention the word Tresiba! I've had so much trouble with the surgery and getting the cartridges instead of the pens. Back in June the manufacturer said there would be a shortage of pens until February 2024 but in October when I put in a repeat prescription with only three weeks of Tresiba left the surgery told me to leave it until nearer the time I was due to run out as the pens might come in again, so I did. Twelve days later I put in another prescription stating cartridges not pens and they actually did prescribe a reusable pen and the cartridges. The next time I needed some insulin, even though the repeat still said disposable pens I stupidly assumed that they would give me the cartridges. I was wrong, when I went to the Tesco pharmacy to see if they'd got the insulin in I was told that the surgery had requested the pens so on my behalf they put in a request for the cartridges. After six days I went to Tesco again and the surgery had only done exactly the same thing again, asked for disposable pens. I had found out that the manufacturer has announced that they won't have disposable pens available until DECEMBER 2024. Armed with a print out I went to the surgery, they looked at the print out, went off to see the prescribing team and I was told I would be able to pick the prescription up that afternoon. I didn't believe it until I saw it but I did get the cartridges! As I don't trust them to prescribe the right ones again the next time I will write on the repeat prescription CARTRIDGES not pens and see what happens. The way things are going I think you need to tell a little white lie about just how much medication you have left, just to allow for them not getting the message. They don't know it but I have one spare disposable pen left just in case they get the prescription wrong next time. I sent off nine empty pens to the manufacturer to be recycled but I think that is a drop in the ocean compared with how many they really need but at least I have done my bit. The surgery have funny ways of prescribing other things. They give me a two month supply of tablets that have to be taken once a day and yet insulin needles which I use four times a day they give me one box of 100 which will last me 25 days. I did ask if I could have two boxes but that fell on deaf ears so I think I will have to buy some myself.