Phenylephrine is a nasal decongestant used to relieve nasal blockage caused by sinusitis, cold, allergy, or hay fever.

It belongs to a class of drugs called vasopressors, and it works by reducing swelling of the blood vessels in the nose.

 It will not cure the cause of the symptoms or speed the recovery.

Phenylephrine is a decongestant that is used to treat stuffy nose and sinus congestion caused by the common cold, hay fever, or other allergies.

• Allergy
• Heart rhythm disorders
• Heart attack
• Visual disturbances
• Insomnia
• Increase in the blood pressure
• Nasal irritation
• Difficult or painful urination

• You should not use medicines that contain phenylephrine if you have used a monoamine oxidase inhibitor (MAOI) in the past 14 days because of a potentially dangerous drug interaction.
• Nonprescription cough and cold combination products, including those that contain phenylephrine, can cause serious side effects or death in young children.
• Oral phenylephrine should be taken with food
• Phenylephrine can make you restless, so don't take it too close to bedtime
• Do not use this medicine without doctor's advice if you are pregnant or breast feeding
• Smoking may worsen the effect; therefore use of tobacco should be avoided.