Who Shouldn't Take Metformin?
Who should not take metformin? People who are allergic to any ingredient of the medicine. Slow-release forms of metformin should not be used in children and adolescents under 18 years of age. Metformin shouldn't be used in the following situations because these can increase the risk of lactic acidosis, a rare but serious potential side effect of metformin. People who are very dehydrated, for example due to severe vomiting or diarrhoea. People with liver problems. People with severe infections or blood poisoning (sepsis). People with reduced blood flow to vital internal organs (shock). People with conditions that cause breathing to be ineffective, ie to not effectively oxygenate the blood or remove carbon dioxide from the lungs (respiratory failure). Who might need extra monitoring while taking metformin? People with kidney problems. Your kidney function will be checked before you start treatment with metformin and at least once a year while you are taking it. Last updated: 16/06/2016 Continue reading >>