Be careful to avoid injury while the area is numb and you are not aware of pain. If this medicine is used in the mouth or throat, do not chew gum or eat food for at least one hour. If the area is still numb, you may choke or bite your tongue or cheek if you try to chew or swallow. Also, you may not feel pain from hot foods or drinks.
Do not apply this medicine to areas of skin that are infected, open, or damaged. This may increase the amount of medicine that passes through your skin and increase the risk of serious side effects.