Skip to main content

Sudafed PE

Generic name: phenylephrine (oral) [ FEN-il-EFF-rin ]
Drug class: Decongestants

Medically reviewed by Philip Thornton, DipPharm. Last updated on Aug 7, 2023.

What is Sudafed PE?

Sudafed PE is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose).

Sudafed PE is used to treat stuffy nose and sinus congestion caused by the common cold, hay fever, or other allergies.

Sudafed PE may also be used for purposes not listed in this medication guide.

Warnings

Do not use this medicine if you have used an MAO inhibitor in the past 14 days, such as isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, or tranylcypromine.

Do not give Sudafed PE to a child younger than 4 years old. Always ask a doctor before giving a cough or cold medicine to a child. Death can occur from the misuse of cough and cold medicines in very young children. Ask a doctor or pharmacist before using any other cough or cold medicine. Phenylephrine or other decongestants are contained in many combination medicines. Taking certain products together can cause you to get too much of a certain drug. Check the label to see if a medicine contains phenylephrine or a decongestant.

Before taking this medicine

Do not use Sudafed PE if you have used an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, tranylcypromine, and others.

You should not use Sudafed PE if you are allergic to phenylephrine.

Ask a doctor or pharmacist if this medicine is safe to use if you have:

Ask a doctor before using this medicine if you are pregnant or breast-feeding.

How should I take Sudafed PE?

Use Sudafed PE exactly as directed on the label, or as prescribed by your doctor. Cold medicine is only for short-term use until your symptoms clear up.

Always follow directions on the medicine label about giving cold medicine to a child.

Measure liquid medicine (Children's Sudafed PE Nasal Decongestant) carefully. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).

Call your doctor if your symptoms do not improve after 7 days, or if you have a fever, rash, or headaches.

If you need surgery, tell your surgeon if you are currently using this medicine.

Store at room temperature away from moisture and heat. Do not freeze.

epinephrine topical, pseudoephedrine, sodium chloride nasal, phenylephrine nasal, Afrin

What happens if I miss a dose?

Since cold medicine is used when needed, you may not be on a dosing schedule. Skip any missed dose if it's almost time for your next dose. Do not use two doses at one time.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What to avoid

Ask a doctor or pharmacist before using other cough or cold medicines that may contain similar ingredients.

Sudafed PE side effects

Get emergency medical help if you have signs of an allergic reaction to Sudafed PE: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using Sudafed PE and call your doctor at once if you have:

Common Sudafed PE side effects may include:

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect Sudafed PE?

Many drugs can interact with phenylephrine, and some drugs should not be used at the same time. Tell your doctor about all your current medicines and any medicine you start or stop using. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed here.

Does Sudafed PE Congestion interact with my other drugs?

Enter other medications to view a detailed interaction report.

Popular FAQ

Does Mucinex help with Covid?

Mucinex products do not help to prevent or treat the COVID-19 virus itself, but might help relieve some of the symptoms of COVID, like chest congestion, cough, or headache. Select a product that targets only the symptoms you have. Continue reading

Phenylephrine vs Pseudoephedrine - How do they compare?

The most important difference between phenylephrine (PE) and pseudoephedrine is that phenylephrine is ineffective at relieving nasal congestion, whereas there is some evidence that oral pseudoephedrine is effective. Continue reading

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use Sudafed PE only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.