Phencarb GG Side Effects

Generic name: carbetapentane / guaifenesin / phenylephrine

Note: This document contains side effect information about carbetapentane / guaifenesin / phenylephrine. Some of the dosage forms listed on this page may not apply to the brand name Phencarb GG.

Some side effects of Phencarb GG may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

For the Consumer

Applies to carbetapentane / guaifenesin / phenylephrine: oral liquid

Get emergency medical help if you have any of these signs of an allergic reaction while taking carbetapentane / guaifenesin / phenylephrine: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using carbetapentane, guaifenesin, and phenylephrine and call your doctor at once if you have a serious side effect such as:

• fast or pounding heartbeats;

• confusion, hallucinations, unusual thoughts or behavior;

• severe dizziness, anxiety, restless feeling, or nervousness;

• urinating less than usual or not at all;

• easy bruising or bleeding, unusual weakness, fever, chills, body aches, flu symptoms; or

• dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, anxiety, chest pain, shortness of breath, uneven heartbeats, seizure).

Less serious side effects of carbetapentane / guaifenesin / phenylephrine may include:

• dizziness, drowsiness, headache, weakness;

• dry mouth, nose, or throat, increased sweating or urination;

• nausea, mild stomach pain;

• sleep problems (insomnia); 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 carbetapentane / guaifenesin / phenylephrine: oral liquid, oral syrup, oral tablet, oral tablet extended release

Nervous system

Nervous system side effects have included nervousness, lightheadedness, excitability, restlessness, dizziness, tenseness, convulsions, CNS depression, and insomnia.

Cardiovascular

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

Gastrointestinal

Gastrointestinal side effects have included nausea and vomiting.

Psychiatric

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

Respiratory

Respiratory side effects have included respiratory difficulty.

Genitourinary

Genitourinary side effects have included dysuria.

General

General side effects have included weakness and pallor.

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