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Mucinex Fast-Max Cold and Sinus

Dosage form: liquid
Ingredients: Acetaminophen 650mg in 20mL, Guaifenesin 400mg in 20mL, Phenylephrine Hydrochloride 10mg in 20mL
Labeler: RB Health (US) LLC
NDC Code: 63824-016

Disclaimer: Most OTC drugs are not reviewed and approved by FDA, however they may be marketed if they comply with applicable regulations and policies. FDA has not evaluated whether this product complies.

Mucinex® Fast-Max™
Cold & Sinus

Drug Facts

Active ingredients
(in each 20 mL)
Acetaminophen 650 mgPain reliever/fever reducer
Guaifenesin 400 mgExpectorant
Phenylephrine HCl 10 mgNasal decongestant

  • temporarily relieves these common cold and flu symptoms:
    • minor aches and pains
    • sore throat
    • headache
    • nasal congestion
    • 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


Liver warning

This product contains acetaminophen. Severe liver damage may occur if you take:

  • more than 6 doses in 24 hours, which is the maximum daily amount
  • with other drugs containing acetaminophen
  • 3 or more alcoholic drinks daily while using this product

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.
  • 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 precscription 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
  • high blood pressure
  • thyroid disease
  • diabetes
  • 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 last more than 3 days
  • redness or swelling is present
  • new symptoms occur
  • 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.

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 take more than directed (see Overdose warning)
  • 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 prodcuts
  • dose as follows or as directed by a doctor
  • mL = milliliter
  • Adults and children 12 years and older: 20 mL in dosing cup provided every 4 hours.
  • Children under 12 years of age: Do not use.

Other information
  • each 20 mL contains: sodium 12 mg
  • tamper evident: do not use if neckband on bottle cap is broken or missing
  • store between 15-30°C (59-86°F)
  • do not refrigerate
  • dosing cup provided

Inactive ingredients

anhydrous citric acid, edetate disodium, FD&C Blue #1, FD&C Red #40, flavors, glycerin, propylene glycol, propyl gallate, purified water, sodium benzoate, sorbitol, sucralose, trisodium citrate dihydrate, xanthan gum

may contain this ingredient


1-866-MUCINEX (1-866-682-4639)

You may also report side effects to this phone number.

Dist. by: Reckitt Benckiser
Parsippany, NJ 07054-0224 ©RB 2011

Made in England

Made in India


NDC 63824-016-66


Cold & Sinus

Acetaminophen • Pain Reliever/Fever Reducer
Guaifenesin • Expectorant
Phenylephrine HCl • Nasal Decongestant

Relieves Headache & Fever
Relieves Nasal & Chest Congestion
Thins & Loosens Mucus

6 fl oz (180 mL)
For Ages 12+

acetaminophen, guaifenesin, and phenylephrine hydrochloride liquid
Product Information
Product TypeHUMAN OTC DRUGItem Code (Source)NDC:63824-016
Route of AdministrationORALDEA Schedule    
Active Ingredient/Active Moiety
Ingredient NameBasis of StrengthStrength
Acetaminophen (Acetaminophen) Acetaminophen650 mg  in 20 mL
Guaifenesin (Guaifenesin) Guaifenesin400 mg  in 20 mL
Phenylephrine Hydrochloride (Phenylephrine) Phenylephrine Hydrochloride10 mg  in 20 mL
Inactive Ingredients
Ingredient NameStrength
Anhydrous Citric Acid 
Edetate Disodium 
FD&C Blue No. 1 
FD&C Red No. 40 
Propylene Glycol 
Propyl Gallate 
Sodium Benzoate 
Trisodium Citrate Dihydrate 
Xanthan Gum 
#Item CodePackage Description
1NDC:63824-016-66180 mL in 1 BOTTLE
Marketing Information
Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
OTC MONOGRAPH FINALpart34105/15/2012
Labeler - RB Health (US) LLC (081049410)

RB Health (US) LLC

← See all Mucinex Fast-Max Cold and Sinus brands

Medically reviewed on Dec 11, 2018

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.