258 If hypoglycaemia (low blood sugar) or hyperglycaemia (high blood sugar) is not treated they can be very serious and cause headaches, nausea, vomiting, dehydration, unconsciousness, coma or even death (see A and B in section 4 “Possible Side Effects”). • Always keep a spare pen and cartridges of Liprolog Mix25, in case you lose your KwikPen or it gets damaged. • Always carry something to show you are diabetic. • Always carry sugar with you.