Maximum Strength Mucinex Fast-Max Day Cold and Flu and Night Cold and Flu

Acetaminophen, Dextromethorphan Hydrobromide, Doxylamine Succinate, Guaifenesin, and Phenylephrine Hydrochloride · Kit

Over the counter

Active ingredient

Active ingredients (in each liquid gel) Purposes Mucinex FAST-MAX DAY Cold & Flu Acetaminophen 325 mg Pain reliever/fever reducer Dextromethorphan HBr 10 mg Cough suppressant Guaifenesin 200 mg Expectorant Phenylephrine HCl 5 mg Nasal decongestant Active ingredients (in each liquid gel) Purposes Mucinex FAST-MAX NIGHT Cold & Flu Acetaminophen 325 mg Pain reliever/fever reducer Dextromethorphan HBr 10 mg Cough suppressant Doxylamine succinate 6.25 mg Antihistamine Phenylephrine HCl 5 mg Nasal decongestant

Purpose

Uses

Uses temporarily relieves these common cold and flu symptoms: sinus congestion and pressure cough minor aches and pains headache nasal congestion sore throat runny nose (NIGHT only) sneezing (NIGHT only) itching of the nose or throat (NIGHT only) itchy, watery eyes due to hay fever (NIGHT only) helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive (DAY only) controls cough to help you get to sleep temporarily reduces fever

Warnings

Warnings Liver warning This product contains acetaminophen. Severe liver damage may occur if you take: more than 12 liquid gels 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 glaucoma (NIGHT only) a breathing problem such as emphysema or chronic bronchitis (NIGHT only) 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 taking sedatives or tranquilizers (NIGHT only) When using this product do not use more than directed excitability may occur, especially in children (NIGHT only) marked drowsiness may occur (NIGHT only) alcohol, sedatives, and tranquilizers may increase drowsiness (NIGHT only) avoid alcoholic drinks (NIGHT only) be careful when driving a motor vehicle or operating machinery (NIGHT only) 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 glaucoma (NIGHT only) a breathing problem such as emphysema or chronic bronchitis (NIGHT only) 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 taking sedatives or tranquilizers (NIGHT only)

When using this product

When using this product do not use more than directed excitability may occur, especially in children (NIGHT only) marked drowsiness may occur (NIGHT only) alcohol, sedatives, and tranquilizers may increase drowsiness (NIGHT only) avoid alcoholic drinks (NIGHT only) be careful when driving a motor vehicle or operating machinery (NIGHT only)

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 liquid gels in any 24-hour period adults and children 12 years of age and over: take 2 liquid gels every 4 hours children under 12 years of age: do not use

Other information

Other information store at 20-25°C (68-77°F) avoid excessive heat

Inactive ingredients

Inactive ingredients (DAY only) FD&C yellow no. 6, gelatin, glycerin, lecithin (soy), mineral oil, polyethylene glycol, povidone, propylene glycol, purified water, shellac, sorbitol sorbitan solution, titanium dioxide Inactive ingredients (NIGHT only) D&C yellow no. 10, FD&C blue no. 1, gelatin, glycerin, lecithin (soy), mineral oil, polyethylene glycol, povidone, propylene glycol, purified water, shellac, sorbitol sorbitan solution, 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.

Maximum Strength Mucinex Fast-Max Day Cold and Flu and Night Cold and Flu NDC products (1)

NDC	Strength & form	Labeler	Type
63824-519	Kit	Reckitt Benckiser LLC	OTC MONOGRAPH DRUG

Frequently asked questions

What is Maximum Strength Mucinex Fast-Max Day Cold and Flu and Night Cold and Flu used for?

Who makes Maximum Strength Mucinex Fast-Max Day Cold and Flu and Night Cold and Flu?

Maximum Strength Mucinex Fast-Max Day Cold and Flu and Night Cold and Flu is listed by 1 labeler in the FDA NDC directory, including Reckitt Benckiser LLC.