Confusion, and headache. severe low blood sugar can be serious and life-threatening. ask your doctor about alcohol use, operating machinery, or driving. other possible side effects include injection site reactions. tell your doctor about all medicines you take and all of your medical conditions. check your blood sugar. your insulin dose should not be changed without asking your doctor. get medical help right away if you have trouble breathing, sweating, extreme drowsiness, swelling of your face, tongue, or throat, dizziness, or confusion. today's the day to ask about levemir® flextouch. cover...