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Delsym Cough Plus Chest Congestion (DM)

Generic name: dextromethorphan and guaifenesin [DEX-troe-me-THOR-fan-and-gwye-FEN-e-sin]

Brand names: Adult Cough DM, Children Giltuss Cough and Chest Congestion, Children’s Delsym Cough+Chest Congest DM, Children’s Robitussin Cough and Chest, Children’s Robitussin Cough and Chest Congestion DM,… show all 99 brands
Class of drugs: Combinations for upper respiratory tracts

What is Delsym Cough Plus Chest Congestion DM?

Dextromethorphan suppresses coughing. Guaifenesin acts as an expectorant. Delsym Cough Plus Chest Congestion DM treats coughing and congestion in the chest caused by allergies or the common cold. Dextromethorphan does not work to treat coughs caused by smoking. This leaflet does not list all the brands or forms available. Delsym Cough Plus Chest Congestion DM can be used in other ways not mentioned in the medication guide.

Side Effects of Delsym Cough Plus Chest Congestion DM

If you experience any of the following symptoms of an allergy: difficulty breathing, hives, swelling in your lips, face, throat, or tongue Delsym Cough Plus Chest Congestion DM can cause serious side effects. Delsym cough plus chest congestion may cause serious side effects.

  • Mood changes
  • Severe headache
  • Feeling dizzy or anxious, as if you could pass out.

Some of the common side effects that Delsym Cough plus Chest Congestion DM can cause include:

  • Dizziness, drowsiness;
  • Sleep problems (insomnia);
  • Diarrhea;
  • Feeling nervous, restless, or anxious

There may be other side effects. Call your physician if experiencing side effects; report side effects by contacting FDA at 1-800-FDA-1088.


If you've taken an MAO inhibitor in the last 14 days (such as isocarboxazid or linezolid), avoid using this medication.

Before you take this drug

Delsym Cough Plus Chest Congestion DM should not be used if an MAO inhibitor has been taken in the last 14 days. A dangerous medication interaction may occur. The MAO inhibitors are isocarboxazid (linezolid), phenelzine (phenelzine injection), rasagiline (selegiline), methylene blue injection, and tranylcypromine.

If you suffer from:

  • A cough that produces mucus
  • Chronic bronchitis or asthma.

Consult your doctor before taking this medication if you're pregnant or breastfeeding. The medicine you are taking may contain phenylalanine. If you have phenylketonuria, check the label of your medication.

How to take Delsym Cough Plus Chest Congestion DM?

Follow all instructions included with your package or those given to you by your physician.Use cold or cough medicines only as needed until symptoms have cleared up. Follow the directions provided on the label when giving cough and cold medicines to children. Never use cough and cold medicine to put a young child to sleep. Measuring liquid medication is important. Dosing devices are available, but not spoons. It may be necessary to shake the liquid prior to measuring a dosage.Follow all instructions listed on your packaging carefully.Do not chew or crush the Extended-Release Tablet. The granules can be sprinkled directly on your tongue. Swallow immediately. While taking this medication, drink extra liquids to loosen congestion and lubricate the throat. If your symptoms don't improve within 7 days or you experience a headache, fever, or rash, call your doctor. Tell the surgeon if you've taken the medicine in the last few days. Stay away from heat and moisture at room temperature.

What happens if I miss the dose?

Delsym Cough Plus Chest Congestion DM can be used as needed. You may not have a regular dosing regimen. If it is almost time to take your next dose, skip any missed doses. Never take two doses in one go.

What happens if I overdose?

Reach out immediately if a poisonous substance comes your way; call 1-800-222-1222.

What should be avoided?

Delsympic cough plus chest congestion DM may affect your ability to drive or perform hazardous activities. You may be unable to react. Alcohol abuse combined with medications like this one may produce undesirable side effects. Before using any other cold or cough medicines, ask your doctor or pharmacist if they contain the same ingredients.

Interaction with other drug

Use this medication with caution if you are taking other medications that can cause sleepiness, slow breathing, or drowsiness (such as an opioid, muscle relaxant, medicine to treat anxiety, seizures, or a medicine for pain). Before using this medication, ask your doctor or pharmacist if you also use any other medications, such as prescriptions and OTC medicines, vitamins, and herbs. When used in combination, some medicines may cause harmful or unwanted effects. This medication guide does not list all interactions.