Phenylephrine works by reducing swelling of the blood vessels in the nostrils. The medicine is available without a prescription and is generally safe when taken as advised. Also:
- It helps manage the symptoms of allergies and the common cold (i.e. blocked nose).
- The drug may also be used in ear infections to relieve congestion.
- Phenylephrine is helpful to treat low blood pressure.
Phenylephrine is a medication that relieves blocked or stuffy nose and ears. Your nose may be blocked because of a cold or allergies. This medicine works by reducing the swelling of the linings of the nose and ears to relieve discomfort. This medicine may make you sleepy, do not drive or operate a machine when taking it.
You should not take this medicine if you have chronic heart failure or have had a heart attack.
- Phenylephrine is available as a tablet, a liquid, dissolving strip or as an injection.
- The tablet is taken by mouth with or without food.
- If you are using chewable tablets, chew each tablet thoroughly before swallowing.
- If you are taking the liquid, do not use a household spoon to measure your dose. Instead, always use the measuring cup that comes with the medication.
- If you are using a product made to dissolve in the mouth (tablets or strips), dry your hands before handling the medication. Place each dose on the tongue and allow it to dissolve completely, then swallow it with saliva or with water.
- Injection is given in a vein or in a muscle.
- Do not take more medicine than prescribed.
- This medicine is not for use in children below the age of six years.
The following are unpleasant effects that you may experience while using Phenylephrine. They include:
- Being worried and tense.
Before you take this drug, inform your healthcare provider if you have any conditions that may increase your risk of having side effects or make Phenylephrine unsafe for you:
- Let your doctor know if you have or ever had high blood pressure.
- Tell your doctor if you are pregnant, planning to become pregnant or are breastfeeding.
- Inform your doctor if you have or ever had diabetes, trouble urinating because of an enlarged prostate gland, or have heart disease.