Important: This page is general information, not medical advice. It does not recommend or prescribe any treatment. Always consult your doctor or pharmacist before starting, stopping or changing any medicine.
Quick facts
- Drug class
- Expectorant [EPC]
- How it is given
- oral
- Type
- human otc drug
- Brand names
- Sunmark Chest Congestion Relief DM DM
- RxNorm ID
- 1147685
We do not publish dosing. How much of this medicine to take, how often, and for how long depends on your age, weight, kidney and liver function, other conditions and other medicines. That is a decision for the person who prescribes or dispenses it. Follow the directions on your own pack and ask your pharmacist if anything is unclear.
What it is used to treat
Uses ■ Temporarily relieves cough due to minor throat and bronchial irritation as may occur with a common cold ■ Helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus ■ Helps make coughs more productive.
Warnings
Warnings Do not use ■ if you are now taking a prescription monoamine oxidase (inhiMor~MAIO) (Certain drugs for depression, psychiatric or emotional conditioners or Parkinson's disease)or for 2 weeks after stopping MAIO drug, If you do not know if your prescription drug contains an MAIO, ask your doctor or pharmacist before using this product.
Ask a doctor before use if
Ask doctor before use if you have ■ persistent or chronic cough, such as occurs with smoking, asthma, bronchitis or emphysma ■ cough is accompanied by excessive phlegm (mucus)
Stop use and see a doctor if
Stop use and ask doctor if ■ symptoms are accompanied by fever, rash or persistent headache ■ cough persists for more than 1 week or tends to recur. A persistent cough may be a sign of a serious condition.
Pregnancy and breastfeeding
If pregnant or breast-feeding, ask a health professional before use.
Storing it safely
Other Information Store at 15°-30°C (59°-86°F)
Keeping it away from children
Keep out of reach of children. In case of overdose, get medical help or contact a Poison Center immediately.
Active ingredient
Active ingredient - (per tablet) Dextromethorphan Hydrobromide 20mg Guaifenesin 400mg
Other ingredients
Inactive Ingredients magnesium stearate, microcrystalline cellulose. May also contain (colloidal) silicon dioxide, (co) povidone, dicalcium phosphate, maltodextrin, sodium starch glycolate, stearic acid. image of display
Before you take anything new
Tell your pharmacist or doctor about every medicine you take — including ones bought without a prescription, herbal products and supplements. Interactions are one of the most common avoidable causes of harm from medicines, and a pharmacist can check your full list in a couple of minutes.
This page is built from the openFDA record of the U.S. Food and Drug Administration's approved labelling for this product, effective 18 December 2024. Label text has been shortened and reformatted for readability; safety wording has not been altered in meaning. FDA labelling describes products approved in the United States — brand names, strengths, formulations and approved uses may differ in your country. Always read the leaflet that comes with your own pack. PocketsInfo is not affiliated with, and is not endorsed by, the FDA. Retrieved 2026-07-30.