5mL doTERRA On Guard protective blend. This is a great blend for cold and flu season to keep the immune system strong at the onset. It's a blend of wild orange, clove bud, cinnamon, eucalyptus and rosemary. This blend tastes great in a drop under your tongue or in a glass on water (one drop use a glass glass because these oils are potent and will leach toxins from plastic just as they would detoxify your body).