Maximum Strength Mucinex Fast-Max Cold and Flu
ACETAMINOPHEN, DEXTROMETHORPHAN HYDROBROMIDE, GUAIFENESIN, and PHENYLEPHRINE HYDROCHLORIDE · Solution · Oral
Active ingredient
Active ingredients (in each caplet) Purposes Acetaminophen 325 mg Pain reliever/fever reducer Dextromethorphan HBr 10 mg Cough suppressant Guaifenesin 200 mg Expectorant Phenylephrine HCl 5 mg Nasal decongestant
Purpose
Active ingredients (in each caplet) Purposes Acetaminophen 325 mg Pain reliever/fever reducer Dextromethorphan HBr 10 mg Cough suppressant Guaifenesin 200 mg Expectorant Phenylephrine HCl 5 mg Nasal decongestant
Uses
Uses temporarily relieves these common cold and flu symptoms: nasal congestion headache cough minor aches and pains sore throat sinus congestion and pressure temporarily reduces fever helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive
Warnings
Warnings Liver warning This product contains acetaminophen. Severe liver damage may occur if you take: more than 12 caplets in 24 hours, which is the maximum daily amount with other drugs containing acetaminophen 3 or more alcoholic drinks daily while using this product Allergy alert Acetaminophen may cause severe skin reactions. Symptoms may include: skin reddening blisters rash If a skin reaction occurs, stop use and seek medical help right away. Sore throat warning If sore throat is severe, persists for more than 2 days, is accompanied or followed by fever, headache, rash, nausea, or vomiting, consult a doctor promptly. Do not use with any other drug containing acetaminophen (prescription or nonprescription). If you are not sure whether a drug contains acetaminophen, ask a doctor or pharmacist. 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 liver disease heart disease diabetes high blood pressure thyroid disease 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) Ask a doctor or pharmacist before use if you are taking the blood thinning drug warfarin When using this product do not use more than directed Stop use and ask a doctor if nervousness, dizziness, or sleeplessness occur pain, nasal congestion, or cough gets worse or lasts more than 7 days fever gets worse or lasts more than 3 days redness or swelling is present new symptoms occur cough comes back, or occurs with fever, rash, or headache that lasts. 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. Overdose warning Taking more than the recommended dose (overdose) may cause liver damage. In case of overdose, get medical help or contact a Poison Control Center right away. Quick medical attention is critical for adults as well as for children even if you do not notice any signs or symptoms.
Do not use
Do not use with any other drug containing acetaminophen (prescription or nonprescription). If you are not sure whether a drug contains acetaminophen, ask a doctor or pharmacist. 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 liver disease heart disease diabetes high blood pressure thyroid disease 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)
Ask a doctor or pharmacist
Ask a doctor or pharmacist before use if you are taking the blood thinning drug warfarin
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 pain, nasal congestion, or cough gets worse or lasts more than 7 days fever gets worse or lasts more than 3 days redness or swelling is present new symptoms occur cough comes back, or occurs with fever, rash, or headache that lasts. 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.
Directions
Directions do not take more than directed (see Overdose warning ) do not take more than 12 caplets in any 24-hour period adults and children 12 years of age and over: take 2 caplets every 4 hours children under 12 years of age: do not use
Other information
Other information store at 20-25°C (68-77°F)
Inactive ingredients
Inactive ingredients croscarmellose sodium, crospovidone, FD&C red no. 40 aluminum lake, FD&C yellow no. 6 aluminum lake, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polyvinyl alcohol, povidone, talc, titanium dioxide
Questions?
Questions? 1-866-MUCINEX (1-866-682-4639) You may also report side effects to this phone number.
Label text from the FDA structured product label by Reckitt Benckiser LLC (revised May 12, 2026). Long sections are shortened; the complete label is on DailyMed.
Active ingredients
- Acetaminophen in 4 products
- Dextromethorphan Hydrobromide in 4 products
- Guaifenesin in 4 products
- Phenylephrine Hydrochloride in 4 products
Maximum Strength Mucinex Fast-Max Cold and Flu NDC products (4)
| NDC | Strength & form | Labeler | Type |
|---|---|---|---|
| 63824-518 | Acetaminophen 325 mg/1; Dextromethorphan Hydrobromide 10 mg/1; Guaifenesin 200 mg/1; Phenylephrine Hydrochloride 5 mg/1 Capsule, Liquid Filled | Reckitt Benckiser LLC | OTC MONOGRAPH DRUG |
| 63824-527 | Acetaminophen 650 mg/20mL; Dextromethorphan Hydrobromide 20 mg/20mL; Guaifenesin 400 mg/20mL; Phenylephrine… Solution | Reckitt Benckiser LLC | OTC MONOGRAPH DRUG |
| 63824-548 | Acetaminophen 650 mg/20mL; Dextromethorphan Hydrobromide 20 mg/20mL; Guaifenesin 400 mg/20mL; Phenylephrine… Solution | Reckitt Benckiser LLC | OTC MONOGRAPH DRUG |
| 63824-575 | Acetaminophen 325 mg/1; Dextromethorphan Hydrobromide 10 mg/1; Guaifenesin 200 mg/1; Phenylephrine Hydrochloride 5 mg/1 Tablet, Film Coated | Reckitt Benckiser LLC | OTC MONOGRAPH DRUG |
Frequently asked questions
What is Maximum Strength Mucinex Fast-Max Cold and Flu used for?
Uses temporarily relieves these common cold and flu symptoms: nasal congestion headache cough minor aches and pains sore throat sinus congestion and pressure temporarily reduces fever helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive
Who makes Maximum Strength Mucinex Fast-Max Cold and Flu?
Maximum Strength Mucinex Fast-Max Cold and Flu is listed by 1 labeler in the FDA NDC directory, including Reckitt Benckiser LLC.