So this has just happened to me as well. Because I have various prescriptions all out of sync, I had lost track and when I went into the Metformin box it was empty. So it would be interesting to see how this affects me too, but first some preamble.
At long last I got to speak to a G.P. today. And it was the good one who saved my kidneys. One of the issues I wanted to discuss was my high glucose levels and, unlike the pharmacist he understood my evidence for saying Gliclazide is no longer working.
He suggested trying a GLP-1 inhibitor (I forget which, he described it as seeing out the glucose). But I mentioned the LADA possibility and he is ordering the blood tests, so we can let them decide. But I digress. He also asked me if Merformin was still working, and I said I assume so so had not stopped taking it to find out But it should be if I am still producing some insulin, though did not think to say that because the situation was quite stressful for me.
My Monday morning and afternoon fasting levels were a good-for-me 10.5 and 9.0. But it was that evening I discovered I had ran out of Metformin, giving me two days without.
Yesterday's levels on just Sitagliptin were a very good at 8.2 and 11.4, but this morning I was woken early by the bin men. I had to just lie there while they banged away and could not get back to sleep after. My routine messed up, I only realized much later, after having eaten something, that I had forgotten to test.
It is a shame the doctor called when he did and I had nothing to report, because when I tested this evening they were 22.4. That obviously did not sound right, so I took a second reading on my other hand to confirm and it was 23.8. Exactly the same number! If you allow for a glucometer's margin of error.
That surely cannot be the effect of removing Metformin alone? It makes it seem a tad too effective, no? Though if it is supposed to take three weeks to leave the system, I am dead curious to know where my levels will end up. And it will almost certainly be dead, if that is just the start of the scale.
So tomorrow morning will be very interesting. After which I will see if the pharmacy has all my prescriptions so I can arrange to have them collected. But I am now torn between wanting to see what will happen and not wanting to go blind.