Gilchew IR Side Effects

Generic Name: phenylephrine

Note: This page contains information about the side effects of phenylephrine. Some of the dosage forms included on this document may not apply to the brand name Gilchew IR.

Not all side effects for Gilchew IR may be reported. You should always consult a doctor or healthcare professional for medical advice. Side effects can be reported to the FDA here.

For the Consumer

Applies to phenylephrine: oral strips orally dissolving, oral tablets, parenteral injection

Side effects include:

Systemic use: May cause restlessness, anxiety, nervousness, weakness, dizziness, precordial pain or discomfort, tremor, respiratory distress, pallor or blanching of the skin, or a pilomotor response.

Anorectal use: In recommended dosages for local effect in anorectal disorders (e.g., hemorrhoids), adverse systemic effects of vasoconstrictors such as phenylephrine (the active ingredient contained in Gilchew IR) generally are minimal.

For Healthcare Professionals

Applies to phenylephrine: compounding powder, injectable solution, intravenous solution, oral disintegrating strip, oral liquid, oral suspension extended release, oral tablet, oral tablet chewable, oral tablet chewable extended release, oral tablet disintegrating

Nervous system

Nervous system side effects have included headache, dizziness, nervousness, restlessness, tremor, insomnia, convulsions, and central nervous system depression.


Cardiovascular side effects have included palpitations, arrhythmias, and cardiovascular collapse with hypotension.


Psychiatric side effects have included hallucinations, fear, and anxiety.


Gastrointestinal side effects have included nausea.


Respiratory side effects have included respiratory difficulty.


Genitourinary side effects have included dysuria.


General side effects have included pallor and weakness.

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