Medications and Drugs
Brand Names: Phenflu CD, Phenflu CDX
Generic Name: acetaminophen, codeine, guaifenesin, and phenylephrine (Pronunciation: a SEET oh MIN oh fen, KOE deen, gwye FEN e sin, FEN il EFF rin)
What is acetaminophen, codeine, guaifenesin, and phenylephrine (Phenflu CD, Phenflu CDX)?
Guaifenesin is an expectorant. It helps loosen mucus congestion in your chest and throat, making it easier to cough out through your mouth.
Phenylephrine is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose).
The combination of acetaminophen, codeine, guaifenesin, and phenylephrine is used to treat headache, fever, body aches, cough, chest congestion, stuffy nose, and sinus congestion caused by allergies, the common cold, or the flu.
Acetaminophen, codeine, guaifenesin, and phenylephrine may also be used for other purposes not listed in this medication guide.
What are the possible side effects of acetaminophen, codeine, guaifenesin, and phenylephrine (Phenflu CD, Phenflu CDX)?
Get emergency medical help if you have any of these signs of an allergic reaction: 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:
Less serious side effects may include:
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is the most important information I should know about acetaminophen, codeine, guaifenesin, and phenylephrine (Phenflu CD, Phenflu CDX)?
Do not take more of this medication than is recommended. An overdose of acetaminophen can damage your liver or cause death. Tell your doctor if you have ever had alcoholic liver disease (cirrhosis) or if you drink more than 3 alcoholic beverages per day.
You should not use this medicine if you have inflammatory bowel disease, severe constipation, a blockage in your stomach or intestines, severe colitis or toxic megacolon, if you have a colostomy or ileostomy, if you are unable to urinate, if you have been sick with diarrhea, if you recently drank large amounts of alcohol, or if you have a head injury or brain tumor.
Do not drink alcohol while you are taking this medicine.
Do not use this medicine if you have used an MAO inhibitor such as furazolidone (Furoxone), isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam, Zelapar), or tranylcypromine (Parnate) in the last 14 days. A dangerous drug interaction could occur, leading to serious side effects.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Need help identifying pills and medications?
Drugs and Treatment Resources
- The Benefits of Tea Tree Oil
- Teaching Your Child to Use Their Auto-Injector
- Why Are ADHD Drugs Controlled Substances?