Tussin DMMax
Dextromethorphan HBr, Guaifenesin · Liquid · Oral
Active ingredient
Active Ingredients (in each 20 mL) Dextromethorphan HBr 20mg Guaifenesin 400 mg
Purpose
Purpose Cough Suppressant Expectorant
Uses
Uses temporarily relieves cough due to minor throat and bronchial irritation as may occur with a cold helps loosen phlegm (mucus) and thin bronchial secretions to drain bronchial tubes
Warnings
Warnings Do not use 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 us if you have cough that occurs with too much phlegm (mucus) cough that lasts or is chronic such as occurs with smoking,asthma, chronic bronchitis, or emphysema
Stop use and ask a doctor
Stop use and ask a doctor if cough lasts more than 7 days, comes back, or is accompanied by fever, rash, or persistent headache. These could be signs of a serious condition. When using this prodcut, do not use more than directed.
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 right away.
Directions
Directions do not take more than 6 doses in any 24-hour period measure only with dosing cup provided do not use dosing cup with other products mL = mililiters adults and children 12 years of age and over: 20 mL in dosing cup provided every 4 hours children under 12 years of age: do not use
Inactive ingredients
Inactive ingredients Artificial and natural flavor, citric acid, FD&C Blue #1, FD&C Red #40, hydroxyethylcellulose, L-menthol, methylparaben, propylen glycol, propylparaben, purified water, sodium citrate, sucralose, and sucrose.
Questions?
Questions or comments? Call 1-516-341-0666 8:30 am - 4:30 pm EST Mon-Fri
Label text from the FDA structured product label by RELIABLE 1 LABORATORIES LLC (revised Jan 2, 2026). Long sections are shortened; the complete label is on DailyMed.
Active ingredients
- Dextromethorphan Hydrobromide in 1 product
- Guaifenesin in 1 product
Tussin DMMax NDC products (1)
| NDC | Strength & form | Labeler | Type |
|---|---|---|---|
| 69618-072 | Dextromethorphan Hydrobromide 20 mg/20mL; Guaifenesin 400 mg/20mL Liquid | RELIABLE 1 LABORATORIES LLC | OTC MONOGRAPH DRUG |
Frequently asked questions
What is Tussin DMMax used for?
Uses temporarily relieves cough due to minor throat and bronchial irritation as may occur with a cold helps loosen phlegm (mucus) and thin bronchial secretions to drain bronchial tubes
Who makes Tussin DMMax?
Tussin DMMax is listed by 1 labeler in the FDA NDC directory, including RELIABLE 1 LABORATORIES LLC.