Lantus

Before taking this medicine

Do not use Lantus during an episode of low blood sugar (hypoglycemia), or if you are allergic to insulin glargine or any of its ingredients. Extra caution and more frequent blood glucose monitoring are needed if you have kidney or liver impairment, do not recognize the warning signs of low blood sugar, or have changes in your medicines, meal pattern or physical activity. Changes to your insulin regimen, injection site or administration method should be made under close medical supervision, as they can cause high or low blood sugar. Low blood sugar can be life-threatening. Check the insulin label before every injection to avoid product mix-ups. Never share insulin syringes or needles, even if the needle is changed. Severe, life-threatening allergic reactions can occur. Stop using Lantus and seek urgent medical help if a severe allergic reaction occurs. Lantus can also cause dangerously low potassium; people at risk may need potassium monitoring. Using Lantus with thiazolidinediones (TZDs) can cause fluid retention and heart failure and requires monitoring for signs and symptoms of heart failure.