Phenflu CDX Side Effects

Generic name: acetaminophen / codeine / guaifenesin / phenylephrine

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

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

Applies to acetaminophen / codeine / guaifenesin / phenylephrine: oral tablet

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

Stop using this medication and call your doctor at once if you have a serious side effect such as:

• confusion, mood changes, severe dizziness or anxiety, feeling like you might pass out;

• sudden severe headache or vomiting, pain or numbness in the arms or legs;

• tremor, seizure (convulsions);

• nausea, pain in your upper stomach, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of your skin or eyes); or

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

Less serious side effects of acetaminophen / codeine / guaifenesin / phenylephrine may include:

• dizziness, drowsiness, mild headache;

• mild nausea, upset stomach, constipation;

• runny nose;

• feeling nervous, restless, or anxious; or

• sleep problems (insomnia).

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

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 information does not endorse drugs, diagnose patients, or recommend therapy. This drug 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 drug combination in no way should be construed to indicate that the drug of drug combination is safe, effective, or appropriate for any given patient. Drugs.com does not assume any responsibility for any aspect of healthcare administered with the aid of information 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 drugs you are taking, check with your doctor, nurse, or pharmacist.