Dexchlorpheniramine / Phenylephrine Side Effects

Applies to dexchlorpheniramine / phenylephrine: oral tablet.

Important warnings This medicine can cause some serious health issues

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 use this medicine only to make a child sleepy.

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

Stop using this medicine and call your doctor at once if you have:

• severe dizziness;

• nervousness, trouble sleeping;

• little or no urination; or

• high blood pressure (severe headache, pounding in your neck or ears).

Common side effects may include:

• dizziness, drowsiness;

• dry mouth, nose, or throat;

• constipation;

• blurred vision; or

• feeling restless or excited (especially in children).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

For healthcare professionals

Applies to dexchlorpheniramine/phenylephrine: oral tablet, oral tablet extended release.

Gastrointestinal adverse events

Gastrointestinal side effects have included nausea, dry mouth, anorexia, and heartburn.^[Ref]

Nervous system

Nervous system side effects have included headache, dizziness, mild sedation, tremor, weakness, insomnia, drowsiness, restlessness, convulsions, central nervous system depression, and nervousness.^[Ref]

Genitourinary

Genitourinary side effects have included dysuria.^[Ref]

Psychiatric

Psychiatric side effects have included fear, anxiety, and tenseness.^[Ref]

Cardiovascular

Cardiovascular side effects have included pallor, tachycardia, palpitations, arrhythmias, and cardiovascular collapse with hypotension.^[Ref]

Respiratory

Respiratory side effects have included respiratory difficulty.^[Ref]

Dermatologic

Dermatologic side effects have included very rare reports of dermatitis.^[Ref]

Ocular

Ocular side effects have included blurring of vision.^[Ref]

Further information

Dexchlorpheniramine/phenylephrine side effects can vary depending on the individual. 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.

Medical Disclaimer