Metformin

[marlyn7]

I was wondering if the 5.7 was actually 57mmols/mol and the OP was trying to report it in a similar format to the finger prick results they were seeing.

@marlyn7 Which BG meter were you using? There are a couple of cheaper BG meters on the market which give a false low reading when you don't get enough blood on the test strip rather than giving you an error message, so I am wondering if you were getting genuine lows or false lows as Metformin does not generally cause hypos. Libre and other CGM can also give false lows.

Libre

 

[rebrascora]

Libre over reports highs and lows if your levels are rising or falling fast and often it corrects itself after the event, so if your levels are dropping fast back into range it might show you going as low as 3.5 but when you look at the graph later it doesn't actually go below 4 and there is no time "in the red" It can cause you to eat glucose when you don't need to, which is why you should finger prick to double check. It is also prone to compression lows, where applying constant pressure to it like leaning or lying on it for about 20 mins or more will cause a false low reading.

 

[harbottle]

If you're just on Metformin then it's highly unlikely you'll be having hypos.
Even if you do go low, which is possible with exercise (And alcohol!) in non-diabetics, your metabolism will quickly compensate.

I was 3.3 last night after walking back home from the pub. After 15 minutes it was back up to normal.