Extendryl Chews Side Effects

Generic Name: chlorpheniramine / methscopolamine / phenylephrine

Note: This page contains information about the side effects of chlorpheniramine / methscopolamine / phenylephrine. Some of the dosage forms included on this document may not apply to the brand name Extendryl Chews.

Not all side effects for Extendryl Chews 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 chlorpheniramine / methscopolamine / phenylephrine: tablets

Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Constipation; dizziness; drowsiness; dry mouth, nose, or throat; excitability; headache; increased sweating; loss of appetite; nausea; nervousness or anxiety; trouble sleeping; upset stomach; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur while taking chlorpheniramine / methscopolamine / phenylephrine:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blurred vision or other vision changes; confusion; difficulty swallowing; difficulty urinating or inability to urinate; fast or irregular heartbeat; fever, chills, or persistent sore throat; hallucinations; mental or mood changes; seizures; severe dizziness, drowsiness, lightheadedness, or headache; shortness of breath; tremor; unusual tiredness or weakness.

For Healthcare Professionals

Applies to chlorpheniramine / methscopolamine / phenylephrine: oral capsule extended release, oral liquid, oral suspension extended release, oral syrup, oral tablet, oral tablet chewable, oral tablet chewable extended release, oral tablet extended release

Nervous system

Nervous system side effects of phenylephrine have included headache, dizziness, nervousness, restlessness, tremor, insomnia, convulsions, and central nervous system depression. Antihistamines such as chlorpheniramine and anticholinergics such as methscopolamine may cause drowsiness and dizziness.

Cardiovascular

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

Psychiatric

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

Gastrointestinal

Gastrointestinal side effects of phenylephrine have included nausea. Antihistamines such as chlorpheniramine and anticholinergics such as methscopolamine may cause excessive dryness of the nose, throat, and mouth.

Respiratory

Respiratory side effects of phenylephrine have included respiratory difficulty.

Genitourinary

Genitourinary side effects of phenylephrine have included dysuria.

General

General side effects of phenylephrine have included pallor and weakness.

Ocular

Ocular side effects including blurred vision may be caused by antihistamines such as chlorpheniramine and anticholinergics such as methscopolamine.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.

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