SN instructed patient / caregiver regarding medication Lantus insulin. SN instructed patient / caregiver that insulin is used by the body to remove and use glucose from the blood and produce energy and that it is used in type 2 diabetes to overcome the resistance of the cells to insulin. SN explained that Lantus insulin starts working after 1 - 2 hours and peaks after 6 hours after injection, and has a duration of 18 - 26 hours. SN informed that hypoglycemia is the most common side effect that may occur during insulin therapy. SN instructed patient / caregiver to rotate insulin injection sites to avoid bruising and injury.