Fast Acting Mucus Relief
dextromethorphan hydrobromide, guaifenesin, phenylephrine hydrochloride · Liquid · Oral
Active ingredient
Active ingredients (in each 20 mL) Dextromethorphan HBr 20 mg Guaifenesin 400 mg Phenylephrine HCl 10 mg
Purpose
Purposes Cough suppressant Expectorant Nasal decongestant
Uses
Uses helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive temporarily relieves: cough due to minor throat and bronchial irritation as may occur with the common cold or inhaled irritants the intensity of coughing the impulse to cough to help you get to sleep nasal congestion due to a cold
Warnings
Warnings Do not use for children under 12 years of age if you are now taking a prescription monoamine oxidase inhibitor (MAOI) (certain drugs for depression, psychiatric or emotional conditions, or Parkinson's disease), or for 2 weeks after stopping the MAOI drug. If you do not know if your prescription drug contains an MAOI, ask a doctor or pharmacist before taking this product. Ask a doctor before use if you have heart disease thyroid disease diabetes high blood pressure trouble urinating due to an enlarged prostate gland persistent or chronic cough such as occurs with smoking, asthma, chronic bronchitis or emphysema cough that occurs with too much phlegm (mucus) When using this product, do not use more than directed Stop use and ask a doctor if nervousness, dizziness or sleeplessness occur symptoms do not get better within 7 days or occur with fever cough comes back, or occurs with rash or persistent headache. These could be signs of a serious condition. If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center (1-800-222-1222) right away.
Do not use
Do not use for children under 12 years of age if you are now taking a prescription monoamine oxidase inhibitor (MAOI) (certain drugs for depression, psychiatric or emotional conditions, or Parkinson's disease), or for 2 weeks after stopping the MAOI drug. If you do not know if your prescription drug contains an MAOI, ask a doctor or pharmacist before taking this product.
Ask a doctor before use
Ask a doctor before use if you have heart disease thyroid disease diabetes high blood pressure trouble urinating due to an enlarged prostate gland persistent or chronic cough such as occurs with smoking, asthma, chronic bronchitis or emphysema cough that occurs with too much phlegm (mucus)
When using this product
When using this product, do not use more than directed
Stop use and ask a doctor
Stop use and ask a doctor if nervousness, dizziness or sleeplessness occur symptoms do not get better within 7 days or occur with fever cough comes back, or occurs with rash or persistent headache. These could be signs of a serious condition.
Pregnancy or breast-feeding
If pregnant or breast-feeding, ask a health professional before use.
Keep out of reach of children
Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center (1-800-222-1222) right away.
Directions
Directions do not take more than 6 doses in a 24-hour period measure only with dosing cup provided. Do not use any other dosing device. keep dosing cup with product mL = milliliter shake well before using adults and children 12 years of age and older: 20 mL in dosing cup provided every 4 hours children under 12 years of age: do not use
Other information
Other information each 20 mL contains :sodium 17 mg store between 20-25ºC (68-77ºF). Do not refrigerate
Inactive ingredients
Inactive ingredients citric acid, disodium EDTA, FD&C blue #1, FD&C red #40, flavor, glycerin, propyl gallate, propylene glycol, purified water, sodium benzoate, sorbitol, sucralose, sodium citrate, xanthan gum
Label text from the FDA structured product label by Dolgencorp, Inc. (DOLLAR GENERAL & REXALL) (revised Nov 11, 2025). Long sections are shortened; the complete label is on DailyMed.
Active ingredients
- Dextromethorphan Hydrobromide in 1 product
- Guaifenesin in 1 product
- Phenylephrine Hydrochloride in 1 product
Fast Acting Mucus Relief NDC products (1)
| NDC | Strength & form | Labeler | Type |
|---|---|---|---|
| 55910-037 | Dextromethorphan Hydrobromide 20 mg/20mL; Guaifenesin 400 mg/20mL; Phenylephrine Hydrochloride 10 mg/20mL Liquid | Dolgencorp, Inc. (DOLLAR GENERAL & REXALL) | OTC MONOGRAPH DRUG |
Frequently asked questions
What is Fast Acting Mucus Relief used for?
Uses helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive temporarily relieves: cough due to minor throat and bronchial irritation as may occur with the common cold or inhaled irritants the intensity of coughing the impulse to cough to help you get to sleep nasal congestion due to a cold
Who makes Fast Acting Mucus Relief?
Fast Acting Mucus Relief is listed by 1 labeler in the FDA NDC directory, including Dolgencorp, Inc. (DOLLAR GENERAL & REXALL).