Phenylephrine shrinks swollen nose tissue and opens up passages. It shrinks blood vessels to raise blood pressure. It helps some numbing drugs work longer.
How it works
It comes as a tablet, a liquid, or a dissolving strip to take by mouth. It is also comes as eye drops and nasal solution, instilled over affected area.
Common side effects
High blood pressure. Nervous and excitable. Dry mouth. Good mouth care, sucking hard, sugar-free candy, or chewing sugar-free gum may help. See a dentist often. Not able to sleep.