Dr.pharmacist
Sudafed PE

Sudafed PE

phenylephrine

OTC DrugSudafed PE
Reviewed by Younghun Cho

Pharmacist's Verdict

This product is a multi-symptom cold medicine that can help with pain, fever, cough, and thinning mucus. However, its ingredient for nasal congestion (phenylephrine) has been found to be largely ineffective when taken by mouth, making it a less reliable choice for a stuffy nose.

Ingredient Analysis

Acetaminophen

Dextromethorphan HBr

Guaifenesin

Phenylephrine HCl

Pros & Cons

Pros

  • Targets multiple cold and flu symptoms at once, including pain, fever, and cough.
  • Contains acetaminophen, an effective pain reliever and fever reducer.
  • Includes dextromethorphan to help quiet a cough.
  • Guaifenesin helps to thin mucus, making it easier to clear from your chest.

Cons

  • Oral phenylephrine (the decongestant) is generally ineffective for relieving nasal stuffiness based on recent scientific reviews.
  • Contains acetaminophen, which can cause severe liver damage if you take too much, especially with other acetaminophen-containing products or alcohol.
  • As a combination product, you might be taking medicines for symptoms you don't have, increasing the risk of side effects.
  • Dextromethorphan can interact with certain antidepressant medications (like SSRIs or MAOIs), potentially leading to serious side effects.

Safety Information

Warnings

Warnings Liver warning This product contains acetaminophen. The maximum daily dose of this product is 10 tablets (3,250 mg acetaminophen) in 24 hours. Severe liver damage may occur if you take more than 4,000 mg of acetaminophen in 24 hours with other drugs containing acetaminophen 3 or more alcoholic drinks every day while using this product Allergy alert: acetaminophen may cause severe skin reactions. Symptoms may include: skin reddening blisters rash If a skin reaction occurs, stop use and seek medical help right away. Sore throat warning If sore throat is severe, persists for more than 2 days, is accompanied or followed by fever, headache, rash, nausea, or vomiting, consult a doctor promptly. Do not use with any other drug containing acetaminophen (prescription or nonprescription). If …

Is Sudafed PE safe for you?

See pregnancy, interactions, and common concerns answered in our pharmacist safety FAQ.

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References

  1. 1.
    FDA Drug Label — Daytime Cold and Flu

    FDA DailyMed: Daytime Cold and Flu · FDA

  2. 2.
    FDA Drug Label — SUDAFED PE Head Congestion Plus Flu Severe

    FDA DailyMed: SUDAFED PE Head Congestion Plus Flu Severe · FDA

  3. 3.
    Shock - Classification and Pathophysiological Principles of Therapeutics.

    Kislitsina ON, Rich JD, Wilcox JE, et al., Current cardiology reviews, 2019 · PubMed

  4. 4.
    Vasopressor therapy in critically ill patients with shock.

    Russell JA, Intensive care medicine, 2019 · PubMed

  5. 5.
    Vasopressors for the Treatment of Septic Shock: Systematic Review and Meta-Analysis.

    Avni T, Lador A, Lev S, et al., PloS one, 2015 · PubMed

  6. 6.
    Vasoplegia: A Review.

    Ratnani I, Ochani RK, Shaikh A, et al., Methodist DeBakey cardiovascular journal, 2023 · PubMed