Hypoglycaemia (when used w/ insulin or sulfonylurea); nausea, diarrhoea. Hypoglycaemia (when used w/ other oral antidiabetics), decreased appetite; dizziness; diabetic retinopathy complications; vomiting, abdominal pain/distension, constipation, dyspepsia, gastritis, GERD, eructation, flatulence; cholelithiasis; fatigue; increased lipase & amylase, decreased wt.