The most commonly reported side effects are gastrointestinal, including nausea, vomiting, and diarrhoea, consistent with the GLP-1 drug class
You may be asked to have blood tests to assess potassium levels when your kidney function is tested

Intravenous metformin was found to be less glucose-lowering than oral administration ( 18 F-labeled fluorodeoxyglucose ( 18 F-FDG), which is a non-metabolisable glucose analogue, into the intestinal lumen and sealing of the compartment system through surgery, PET-CT imaging showed accumulation of 18 F-FDG in the intestinal lumen of diabetic rats receiving a single oral dose of metformin ( + concentration gradient, thereby inhibiting intestinal glucose absorption and increasing glucose utilization ( Despite its widespread availability and affordability ( 2 Effects of metformin on the gastrointestinal tract 2.1 Effects on glucose uptake and absorption PET-CT imaging-based studies have found that metformin modulates glucose in the intestine ( 18 F-FDG as a contrast agent, PET-CT technology was used to reflect changes in body metabolism through the uptake of the contrast agent by the lesion, where 18 F-FDG is a glucose analog that indicates the degree of glucose uptake and is generally used clinically to quantify tissue metabolism ( 18 F-FDG to T2DM patients treated with metformin, researchers showed that the amount of glucose entering the gastrointestinal system from the circulation was increased, which contributed to the drugs glucose-lowering effect and improved glycemic control ( Mechanistically, metformin inhibits intestinal glucose absorption (Wilcock and Bailey, 199)

The same study also showed significant reductions in cognitive deficit and dementia risk
It is uncomfortable
Stay Hydrated : Sip water or herbal tea throughout the day