I have PCOS and have been prescribed Metformin. I've been taking it for four days at 500mg 1xdaily so far, increasing to 2xdaily next week.
I am SO thirsty! Like my throat is on fire thirsty, but definitely not acid reflux. I have a headache too, as if i'm dehydrated. I've had four pint glasses of water and three cups of mint tea today and i'm still thirsty now. My pee is almost clear
I don't have type 2 diabetes, I have PCOS which is tied to insulin resistance. Metformin is often prescribed to people with pcos to help deal with insulin resistance and attempt to prevent pre-diabetes.
I'm not sure if it's slow release or normal. My next gp appointment is in three weeks and i have a blood test to check kidney function in a week and a half.
I felt rough for the first couple of weeks after starting metformin. Lots of headaches and nausea too. Go back to your GP if you are at all concerned by side effects. Remember this drug is doing big things to your body. Feeling awful seems quite common amongst others I know who have started it. I took it for type 2 diabetes (diagnosed at 38) but also have PCOS with its associated fertility problems. I became pregnant 3 months after starting on it - 10 years on I think my husband is still surprised!
Slow release has SR on the box (usually) it might be the brand (I've had reactions to brands other than glucophage which is the only one I'm now prescribed - one caused me to be hospitalised).
You can get high blood sugar if you drink alcohol when taking it which can make you very thirsty as well as cause high blood sugar, sometimes people aren't aware of that as the warning is if you're an alcoholic.
You could, if you're concerned, try checking your blood sugars, some pharmacies offer this service as a one off (not all the time obviously) of you could look at getting a machine to check your blood sugar though they can be expensive.
Ok it sounds like it's a generic brand then usually they have SR on if slow release. It could also be due to food you've been eating, if it's been particularly salty. It may just be a minor reaction to a minor ingredient in the tablets as well. See how it goes for the next couple of days, let your body settle into taking it.