I suffered as you are rushing to the loo, feeling nauseous, tummy ache just feeling generally unwell, infact totally wiped out with tiredness.
I Started on Metformin on the 06th January 2021 with 500mg per day increasing the daily dose every seven days until I reached 2000mg I am not on slow release Metformin, I wanted to be able to take all my medication in one go in the morning as trying to remember to fit tablets into my day was never going to be easy for me, prior to this I checked with my diabetic nurse who said this was fine as long as I could tolerate the side effects.
The first week was fine I had no side effects
Second week still fine
Third week started to feel effects as listed
Fourth week really suffering
This continued until week six and I was all for giving up when I happened upon this site and asked for advice, I got loads all of which I took onboard but to see what would work best for me I conducted a number of trials upon myself to ascertain their effectiveness, I need to stress this is my findings based on myself and not scientifically checked so it may be different for you. But these are my findings.
As a relief from feeling bloated or nauseous peppermint tea or peppermint chewing gum work well, eating at set times also helps how ever life can get in the way so be prepaired to have a snack if needed a few nuts works well for me.
I tried various small snacks to consume at the time of taking my medication around 08:00 and settled upon a small bowl of rolled oats with skimmed milk, with this I drink a litre of water and a couple of cups of tea I have tried taking tablets before food after food and even mid food it appeared to make no difference.
I moved my main meal time from early evening to lunch time around 13:00 consisting of lots of green and root vegetables a piece of protein, NO breads or white pasta, rice but I do allow myself a couple of meals per week to include a small amount of brown basmati rice, whole wheat pasta or boiled potato around 70/100g dry weight
Around 18:00 I will have somthing like some fruit Apple banana or if I am a bit hungry then I am partial to cold tin of baked beans
I try to not eat past this time but if I do get the munchies I have a hand full for almonds
This has resolved all my issues with taking Metformin other than feeling washed out and tired until I read that Metformin affects the bodies ability to absorbe vitamin B12 this together with constant lockdown causing lack of sunlight vitamin D deficiency I decided to take a daily multivitamin which after only one week I found the tiredness completly passed
Foods I know that effect me are processed foods anything that has been altered from its original state therefore I buy only raw ingreadants and cook everything from scratch, I have stopped eating sweets even ones without sugar as the sweetness I found really gave me problems, I have stopped drinking alcohol.
My findings are with the tiredness now gone and lots of things I used to eat or drink now off the menu the days can appear to be endless but it's not all doom and glum I am loosing weight and feeling better than I have for several years even to the point that the thought of exercise is starting to appeal to me, in the future I hope to reintroduce some of those things currently off the menu but only as now and then treats .
Stick with it good luck let us know how you get on and share what works for you