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Nasal Four Side Effects

Generic name: phenylephrine nasal

Medically reviewed by Last updated on Dec 25, 2023.

Note: This document contains side effect information about phenylephrine nasal. Some dosage forms listed on this page may not apply to the brand name Nasal Four.

Applies to phenylephrine nasal: nasal solution, nasal spray.

Serious side effects of Nasal Four

Along with its needed effects, phenylephrine nasal (the active ingredient contained in Nasal Four) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur while taking phenylephrine nasal:

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.

Other side effects of Nasal Four

Some side effects of phenylephrine nasal may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Further information

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

Some side effects may not be reported. You may report them to the FDA.