The phenylephrine is a nasal decongestant: it acts by reducing the swelling of blood vessels present in the nasal cavities.
What is phenylephrine used for?
Phenylephrine is used to relieve nasal discomfort caused by colds and allergies .In addition, it can be useful to combat congestion and pressure in the paranasal sinuses.
How is phenylephrine taken?
In general, phenylephrine is administered orally in the form of tablets or solutions to be taken as needed, approximately every four hours. There are also prolonged-release medications to be taken only once or twice a day.
Some medicines contain phenylephrine combined with other medicines.
Side effects of phenylephrine
Phenylephrine can trigger serious side effects . In case of nervousness, dizziness or insomnia associated with its intake it is recommended to stop the treatment and call the doctor for advice.
Cough and cold medications that don’t require a prescription, including those that contain phenylephrine, can trigger dangerous side effects in children: they must not be administered to you before the age of four. Between the ages of four and eleven, it is essential to scrupulously follow the instructions on the package insert.
Phenylephrine should not be taken by those with phenylketonuria, or by those on MAO inhibitors such as isocarboxazide, phenelzine, selegiline and tranylcypromine, or if you have stopped taking one of these drugs for less. two weeks.
At any age, before taking a medicine containing this active substance, you should talk to your doctor or pharmacist:
- of allergies to the active substance or any other drug.
- the medicines, phytotherapy and supplements you are taking
- if you suffer (or have suffered) from high blood pressure, diabetes, problems urinating caused by prostatic hypertrophy or thyroid or heart disease
- of a possible pregnancy or if you are breastfeeding
It is also necessary to inform surgeons and dentists when taking phenylephrine.
If symptoms do not improve within the first seven days of treatment or in case of fever, the intake of phenylephrine should be stopped and a doctor should be sought.