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Maxiflu CDX

Generic Name: pseudoephedrine/codeine/guaifenesin/acetaminophen (SOO-doe-e-FED-rin/KOE-deen/gwye-FEN-e-sin/a-SEET-a-MIN-oh-fen)
Brand Name: Examples include Maxiflu CD and Maxiflu CDX

Maxiflu CDX contains acetaminophen. Severe and sometimes fatal liver problems, including the need for liver transplant, have been reported with the use of acetaminophen. Most cases of these liver problems occurred in patients taking excessive doses of acetaminophen (more than 4,000 mg per day). Also, patients who developed these liver problems were often using more than 1 medicine that contained acetaminophen. Discuss any questions or concerns with your doctor.

Some children have had serious and sometimes fatal breathing problems when using codeine after surgery to remove tonsils or adenoids. Talk with your doctor for more information.

Maxiflu CDX is used for:

Relieving pain, congestion, cough, fever, and throat and airway irritation due to respiratory tract infections and other related conditions. It may also be used for other conditions as determined by your doctor.

Maxiflu CDX is a decongestant, narcotic cough suppressant, expectorant, and analgesic combination. The decongestant works by constricting blood vessels and reducing swelling in the nasal passages. The expectorant works by loosening mucus and lung secretions in the chest, making coughs more productive. The cough suppressant works in the brain to help decrease the cough reflex. The analgesic works in the brain to reduce pain and fever.

Do NOT use Maxiflu CDX if:

  • you are allergic to any ingredient in Maxiflu CDX
  • you are breast-feeding
  • you have severe or uncontrolled high blood pressure, rapid heartbeat, or other severe heart problems (eg, heart blood vessel disease)
  • you have an enlarged prostate
  • you take droxidopa, or have taken furazolidone or a monoamine oxidase inhibitor (MAOI) (eg, phenelzine) within the last 14 days
  • the patient is a child and has just had surgery to remove tonsils or adenoids

Contact your doctor or health care provider right away if any of these apply to you.

Before using Maxiflu CDX:

Some medical conditions may interact with Maxiflu CDX. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:

  • if you are pregnant, planning to become pregnant, or are breast-feeding
  • if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
  • if you have allergies to medicines, foods, or other substances
  • if you have had an allergic reaction to any other codeine- or morphine-related medicine (eg, oxycodone, dihydrocodeine, hydromorphone)
  • if you have a history of glaucoma or increased pressure in the eye; heart problems, (eg, cor pulmonale; fast, slow, or irregular heartbeat; heart disease); diabetes; high or low blood pressure; blood vessel problems (eg, in the brain, in the heart); adrenal gland problems (eg, Addison disease, pheochromocytoma); mental or mood problems (eg, depression); prostate problems; stomach or bowel problems (eg, inflammatory bowel disease, ulcerative colitis, ulcers); seizures; stroke; liver problems (eg, hepatitis); kidney problems; thyroid problems; trouble sleeping; or recent stomach, bowel, or urinary surgery
  • if you have a history of asthma, chronic obstructive pulmonary disease (COPD), or other lung or breathing problems (eg, chronic bronchitis, emphysema, sleep apnea, slow or irregular breathing), or chronic cough, or if your cough occurs with large amounts of mucus
  • if you have severe drowsiness, increased pressure in the brain, an unusual growth in the brain (eg, tumor), a recent head or brain injury, or infection of the brain or nervous system
  • if you have difficulty urinating; low blood volume; a certain bowel problem (pseudomembranous colitis); stomach pain; constipation; a blockage of your bladder, stomach, or bowels; or poor health
  • if you are very overweight or are dehydrated
  • if you drink alcohol, or you have a history of alcohol or drug abuse or dependence, or suicidal thoughts or behaviors
  • if you take medicine for high blood pressure or depression

Some MEDICINES MAY INTERACT with Maxiflu CDX. Tell your health care provider if you are taking any other medicines, especially any of the following

  • Digoxin or droxidopa because the risk of irregular heartbeat or heart attack may be increased
  • Beta-blockers (eg, propranolol), furazolidone, indomethacin, linezolid, MAOIs (eg, phenelzine), tricyclic antidepressants (eg, amitriptyline), or urinary alkalinizers (eg, sodium bicarbonate) because they may increase the risk of Maxiflu CDX's side effects
  • Anticoagulants (eg, warfarin) or bromocriptine because the risk of their side effects may be increased by Maxiflu CDX
  • Guanadrel, guanethidine, mecamylamine, medicines for high blood pressure, methyldopa, or reserpine because their effectiveness may be decreased by Maxiflu CDX
  • Medicines that may harm the liver (eg, methotrexate, ketoconazole, isoniazid, certain medicines for HIV infection) because the risk of liver side effects may be increased. Ask your doctor if you are unsure if any of your medicines might harm the liver

This may not be a complete list of all interactions that may occur. Ask your health care provider if Maxiflu CDX may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.

How to use Maxiflu CDX:

Use Maxiflu CDX as directed by your doctor. Check the label on the medicine for exact dosing instructions.

  • Take Maxiflu CDX by mouth with or without food. If stomach upset occurs, take with food to reduce stomach irritation.
  • Take Maxiflu CDX with a full glass of water (8 oz/240 mL).
  • Drinking extra fluids while you are taking Maxiflu CDX is recommended.
  • If you miss a dose of Maxiflu CDX and you are taking it regularly, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.

Ask your health care provider any questions you may have about how to use Maxiflu CDX.

Important safety information:

  • Maxiflu CDX may cause dizziness or drowsiness. Do not drive, operate machinery, or do anything else that could be dangerous until you know how you react to Maxiflu CDX. Taking Maxiflu CDX alone, with certain other medicines, or with alcohol may lessen your ability to drive or perform other potentially dangerous tasks.
  • Maxiflu CDX may cause dizziness, light-headedness, or fainting; alcohol, hot weather, exercise, or fever may increase these effects. To prevent them, sit up or stand slowly, especially in the morning. Sit or lie down at the first sign of any of these effects.
  • Do not drink alcohol while you are taking Maxiflu CDX.
  • Check with your doctor before you use medicines that may cause drowsiness (eg, sleep aids, muscle relaxers) while you are taking Maxiflu CDX; it may add to their effects. Ask your pharmacist if you have questions about which medicines may cause drowsiness.
  • Maxiflu CDX may cause or worsen constipation. Talk with your doctor or pharmacist about using a stool softener or laxative to prevent constipation. It is also important to maintain a diet adequate in fiber, drink plenty of water, and exercise to prevent constipation. If you become constipated while taking Maxiflu CDX, talk with your doctor or pharmacist.
  • Do not take appetite suppressants while you are taking Maxiflu CDX without checking with your doctor.
  • Maxiflu CDX contains acetaminophen, a decongestant (pseudoephedrine), a narcotic cough suppressant (codeine), and an expectorant (guaifenesin). Before you start any new prescription or nonprescription medicine, check the label to see if it has any of these medicines, other narcotic pain relievers or cough suppressants, or other decongestants in it too. If it does or if you are not sure, contact your doctor or pharmacist.
  • Do NOT take more than the recommended dose, take more often than prescribed, or take for longer than prescribed without checking with your doctor.
  • Maxiflu CDX may harm your liver. Your risk may be greater if you drink alcohol while you are taking Maxiflu CDX. Talk to your doctor before you take Maxiflu CDX or other fever reducers if you drink alcohol.
  • A very bad skin reaction (Stevens-Johnson syndrome/toxic epidermal necrolysis) may happen. It can cause very bad health problems that may not go away and sometimes death. Get medical help right away if you have signs like red, swollen, blistered, or peeling skin (with or without fever); red or irritated eyes; or sores in your mouth, throat, nose, or eyes.
  • Contact your doctor right away if you take more than 4,000 mg of acetaminophen per day, even if you feel well.
  • If your symptoms do not improve within 5 to 7 days or if they become worse, check with your doctor.
  • If your cough does not improve within 5 days, goes away and comes back, or occurs along with a high fever, rash, or persistent headache, check with your doctor.
  • Maxiflu CDX may cause you to become sunburned more easily. Avoid the sun, sunlamps, or tanning booths until you know how you react to Maxiflu CDX. Use a sunscreen or wear protective clothing if you must be outside for more than a short time.
  • Maxiflu CDX may interfere with certain lab test results. Make sure that all of your doctors and laboratory personnel know that you are taking Maxiflu CDX.
  • Tell your doctor or dentist that you take Maxiflu CDX before you receive any medical or dental care, emergency care, or surgery
  • Use Maxiflu CDX with caution in the ELDERLY; they may be more sensitive to its effects, especially confusion, dizziness, drowsiness, dry mouth, excitability, low blood pressure, and trouble urinating.
  • Caution is advised when using Maxiflu CDX in CHILDREN; they may be more sensitive to its effects.
  • Maxiflu CDX should not be used in CHILDREN younger than 6 years old; safety and effectiveness in these children have not been confirmed.
  • PREGNANCY and BREAST-FEEDING: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Maxiflu CDX while you are pregnant. Maxiflu CDX may be found in breast milk. Do not breast-feed while taking Maxiflu CDX.

When used for long periods of time or at high doses, Maxiflu CDX may not work as well and may require higher doses to obtain the same effect as when originally taken. This is known as TOLERANCE. Talk with your doctor if Maxiflu CDX stops working well. Do not take more than prescribed.

When used for long periods of time or at high doses, some people develop a need to continue taking Maxiflu CDX. This is known as DEPENDENCE or addiction.

If you suddenly stop taking Maxiflu CDX, you may experience WITHDRAWAL symptoms including anxiety; diarrhea; fever, runny nose, or sneezing; goose bumps and abnormal skin sensations; nausea; vomiting; pain; rigid muscles; rapid heartbeat; seeing, hearing, or feeling things that are not there; shivering or tremors; sweating; and trouble sleeping.

Possible side effects of Maxiflu CDX:

All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:

Constipation; dizziness; drowsiness; excitability; headache; irritability; light-headedness; nausea; sweating; trouble sleeping; vomiting; weakness.

Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, throat, or tongue); confusion; difficulty urinating or inability to urinate; fainting; fast, slow, or irregular heartbeat; fever, chills, or persistent sore throat; hallucinations; involuntary muscle movements; mental or mood changes (eg, anxiety, nervousness); persistent trouble sleeping; restlessness; seizures; severe or persistent dizziness, drowsiness, light-headedness, or headache; slow, difficult, or shallow breathing; symptoms of liver problems (eg, dark urine, loss of appetite, pale stools, stomach pain, yellowing of the skin or eyes); tremor; vision problems.

This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.

If OVERDOSE is suspected:

Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately. Symptoms may include blurred vision; cold and clammy skin; coma; confusion; decreased urination; difficulty urinating; fainting; fast, slow, or irregular heartbeat; hallucinations; increased or decreased pupil size; increased sweating; limp muscles; paleness; restlessness; seizures; severe dizziness, light-headedness, or headache; severe drowsiness; severe excitability; severe nausea, vomiting, or weakness; slow, fast, difficult, or shallow breathing; symptoms of liver problems (eg, dark urine, loss of appetite, pale stools, stomach pain, yellowing of the skin or eyes); tremor; unusual bruising or bleeding.

Proper storage of Maxiflu CDX:

Store Maxiflu CDX at room temperature, between 59 and 86 degrees F (15 and 30 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep Maxiflu CDX out of the reach of children and away from pets.

General information:

  • If you have any questions about Maxiflu CDX, please talk with your doctor, pharmacist, or other health care provider.
  • Maxiflu CDX is to be used only by the patient for whom it is prescribed. Do not share it with other people.
  • If your symptoms do not improve or if they become worse, check with your doctor.
  • Check with your pharmacist about how to dispose of unused medicine.

This information should not be used to decide whether or not to take Maxiflu CDX or any other medicine. Only your health care provider has the knowledge and training to decide which medicines are right for you. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about Maxiflu CDX. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to Maxiflu CDX. This information is not specific medical advice and does not replace information you receive from your health care provider. You must talk with your healthcare provider for complete information about the risks and benefits of using Maxiflu CDX.

Issue Date: June 3, 2015

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.