Caffeine helps with a runny nose that occurs when a person enters a warm room from the street.
Cold runny nose or vasomotor rhinitis is not very common. This is an individual feature of the body, when the nervous system is very sensitive to changes in air temperature.
“Caffeine can stimulate the secretion of the hormone adrenaline in the blood, and this, in turn, leads not only to an acceleration of the heartbeat or an increase in blood pressure, but also to a narrowing of blood vessels,” said otolaryngologist Ryazantsev.
In this case, caffeine works the same way as vasoconstrictor drops. To get rid of unpleasant symptoms, you can train the vessels of the nose, for example, contrasting washing of the face will help.