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  • dextromethorphan, guaifenesin, and pseudoephedrine
 

dextromethorphan, guaifenesin, and pseudoephedrine

Pronunciation: dex troe meth OR fan, gwye FEN e sin, soo doe e FED rin

Brand: Altarussin CF, Capmist DM, Despec DM, ExeFen-DMX, Maxifed DM, Medent-DMI, Poly-Vent DM, Robitussin Cold and Cough, Robitussin Pediatric Cough and Decongestant, Suda-Tussin DM, SudaTex-DM, Tusnel, Z-Cof 12DM

Pseudovent DM

oblong, white, imprinted with 438, ETHEX

Image of Pseudovent DM
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What is the most important information I should know about dextromethorphan, guaifenesin, and pseudoephedrine?

Multum donot

You should not use this medicine if you have untreated or uncontrolled diseases such as high blood pressure or coronary artery disease. Do not use if you are allergic to dextromethorphan, guaifenesin, or pseudoephedrine.

Do not use cough or cold medicine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include furazolidone, isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine.

Multum nochild

Always ask a doctor before giving a cough or cold medicine to a child. Death can occur from the misuse of cough and cold medicines in very young children.

Ask a doctor or pharmacist before using any other cold, cough, or allergy medicine. Dextromethorphan, guaifenesin, and pseudoephedrine are contained in many combination medicines. Taking certain products together can cause you to get too much of a certain medicine. Check the label to see if a medicine contains dextromethorphan, guaifenesin, or pseudoephedrine.

What is dextromethorphan, guaifenesin, and pseudoephedrine?

Dextromethorphan is a cough suppressant. It affects the signals in the brain that trigger cough reflex.

Guaifenesin is an expectorant. It helps loosen congestion in your chest and throat, making it easier to cough out through your mouth.

Pseudoephedrine is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose).

Dextromethorphan, guaifenesin, and pseudoephedrine is a combination medicine used to treat stuffy nose, sinus congestion, cough, and chest congestion caused by the common cold or flu.

Multum smoking

Dextromethorphan will not treat a cough that is caused by smoking, asthma, or emphysema.

Dextromethorphan, guaifenesin, and pseudoephedrine may also be used for purposes not listed in this medication guide.

What should I discuss with my healthcare provider before using dextromethorphan, guaifenesin, and pseudoephedrine?

Multum donot

You should not use this medicine if you have untreated or uncontrolled diseases such as high blood pressure or coronary artery disease. Do not use if you are allergic to dextromethorphan, guaifenesin, or pseudoephedrine.

Do not use cough or cold medicine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include furazolidone, isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine.

Ask a doctor or pharmacist if it is safe for you to take this medicine if you have other medical conditions, especially:

  • diabetes;
  • epilepsy or other seizure disorder;
  • pheochromocytoma (an adrenal gland tumor); or
  • cough with mucus, or cough caused by chronic bronchitis.
Multum nopreg

FDA pregnancy category C. It is not known whether dextromethorphan, guaifenesin, and pseudoephedrine will harm an unborn baby. Do not use this medicine without medical advice if you are pregnant.

Multum nobrfeed

Dextromethorphan, guaifenesin, and pseudoephedrine may pass into breast milk and may harm a nursing baby. Decongestants may also slow breast milk production. Do not use this medicine without medical advice if you are breast-feeding a baby.

Artificially sweetened liquid medicine may contain phenylalanine. Check the medication label if you have phenylketonuria (PKU).

How should I take dextromethorphan, guaifenesin, and pseudoephedrine?

Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. Cold or cough medicine is usually taken only for a short time until your symptoms clear up.

Multum nochild

Always ask a doctor before giving cough or cold medicine to a child. Death can occur from the misuse of cough or cold medicine in very young children.

Measure liquid medicine with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.

Multum water

Drink extra fluids to help loosen the congestion and lubricate your throat while you are taking this medication.

Multum nocrush

Do not crush, chew, or break an extended-release tablet. Swallow it whole.

Multum calldoc

Call doctor if your symptoms do not improve after 7 days of treatment, or if you have a fever with a headache, cough, or skin rash.

If you need surgery, tell the surgeon ahead of time if you have taken a cold medicine within the past few days.

Multum rt

Store at room temperature, away from heat, light, and moisture.

What happens if I miss a dose?

Since cough and cold medicine is used when needed, you may not be on a dosing schedule. If you are on a schedule, use the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra medicine to make up the missed dose.

What happens if I overdose?

Multum emt

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while taking dextromethorphan, guaifenesin, and pseudoephedrine?

Multum dizzy

This medication may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.

Multum noalcohol

Drinking alcohol can increase certain side effects of dextromethorphan, guaifenesin, and pseudoephedrine.

Multum donot

Ask a doctor or pharmacist before using any other cold, cough, or allergy medicine. Dextromethorphan, guaifenesin, and pseudoephedrine are contained in many combination medicines. Taking certain products together can cause you to get too much of a certain medicine. Check the label to see if a medicine contains dextromethorphan, guaifenesin, or pseudoephedrine.

What are the possible side effects of dextromethorphan, guaifenesin, and pseudoephedrine?

Multum emt

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

Multum calldoc

Stop using this medicine and call your doctor at once if you have:

  • severe dizziness or anxiety, feeling like you might pass out;
  • severe headache;
  • mood changes;
  • fever; or
  • dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, anxiety, chest pain, uneven heartbeats, seizure).

Other common side effects may include:

  • dizziness, drowsiness;
  • sleep problems (insomnia);
  • diarrhea; or
  • feeling nervous, restless, or irritable.

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 other drugs will affect dextromethorphan, guaifenesin, and pseudoephedrine?

Ask a doctor or pharmacist if it is safe for you to take this medicine if you are also using an antidepressant.

Other drugs may interact with dextromethorphan, guaifenesin, and pseudoephedrine, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell each of your health care providers about all medicines you use now and any medicine you start or stop using.

Where can I get more information?

Your pharmacist can provide more information about dextromethorphan, guaifenesin, and pseudoephedrine.


Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. 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.

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