× Home Screening and diagnosis of type 2 diabetesGlycaemic monitoring and targets for type 2 diabetesLifestyle managementNon-insulin medicationsInsulinScreening and management of complications of diabetesManagement of cardiovascular risk factors in diabetesManagement of hypoglycaemiaSick day managementDiabetes in pregnancyDiabetes and drivingPrediabetesGo to the NZSSD site

Type 2 Diabetes Management Guidelines

Metformin

  • Adverse effects of metformin include:
  • Nausea, abdominal pain, vomiting and diarrhoea (common but often transient)
  • Metallic taste in mouth
  • Lactic acidosis (rare)
  • Mild reduction in serum vitamin B12 levels but B12 deficiency is rare.