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

Phenylephrine nasal is used to treat nasal congestion and sinus pressure caused by allergies, the common cold, or the flu. Phenylephrine may be used to treat congestion of the tubes that drain fluid from your inner ears, called the eustachian (yoo-STAY-shun) tubes.

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  • 4-Way, Afrin 4 Hour Extra Moisturizing, Little Noses Decongestant, Nasal Four, Neo-Synephrine Nasal, Sinex Nasal Spray
  • Severity: Moderate
    If any of the following side effects occur while taking phenylephrine nasal, check with your doctor or nurse as soon as possible:

    Symptoms of too much medicine being absorbed into the body
    Note: The above side effects are more likely to occur in children because there is a greater chance that too much of this medicine may be absorbed into the body.

    Fast, irregular, or pounding heartbeat
    headache or dizziness
    increased sweating
    trouble in sleeping
    Increase in runny or stuffy nose
    Severity: Minor
    Some of the side effects that can occur with phenylephrine nasal may not need medical attention. As your body adjusts to the medicine during treatment these side effects may go away. Your health care professional may also be able to tell you about ways to reduce or prevent some of these side effects. If any of the following side effects continue, are bothersome or if you have any questions about them, check with your health care professional:

    Burning, dryness, or stinging of inside of nose
  • (nasal spray, nasal solution, nasal drops)