Label: MUCUS RELIEF- guaifenesin 400 mg tablet

  • Category: HUMAN OTC DRUG LABEL

Drug Label Information

Updated March 24, 2026

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  • Active ingredient (in each tablet)

    Guaifenesin 400 mg

  • Purpose

    Expectorant

  • Uses

    • helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageway of bothersome mucus
    • helps make coughs more productive
  • Warnings

    Ask a doctor before use if you have

    • persistent or chronic cough such as occurs with smoking, asthma, chronic bronchitis or emphysema
    • cough accompanied by excessive phlegm (mucus)

    When using this product

    • do not exceed recommended dosage
    • do not use for more than 7 days

    Stop use and ask a doctor if

    • cough lasts for more than 7 days, recurs, or is accompanied by fever, 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) immediately.

  • Directions

    Adults and children 12 years of age and older: take 1 tablet every 4 hours with a full glass of water while symptoms persist. Do not exceed 6 doses in 24 hours.

    Children under 12 years of age:do not use

  • Other information

    • store at 25°C (77°F); excursions permitted between 15°-30°C (59°-86°F)
    • keep in a dry place and do not expose to heat
    • DO NOT USE IF PRINTED SEAL UNDER CAP IS MISSING OR DAMAGED
  • Inactive ingredients

    Colloidal Silicon Dioxide, Croscarmellose Sodium, Maltodextrin, Microcrystalline Cellulose, Polyvinyl Pyrrolidone, Stearic Acid

  • Questions?

    call toll-free 1-844-912-4012

  • SPL UNCLASSIFIED SECTION

    Manufactured for:

    TwinMed LLC.

    11333 Greenstone Ave

    Santa Fe Springs, CA 90670

    ProCureProducts.com

  • Principal Display Panel

    Guai 400

  • INGREDIENTS AND APPEARANCE
    MUCUS RELIEF 
    guaifenesin 400 mg tablet
    Product Information
    Product TypeHUMAN OTC DRUGItem Code (Source)NDC:55681-311
    Route of AdministrationORAL
    Active Ingredient/Active Moiety
    Ingredient NameBasis of StrengthStrength
    GUAIFENESIN (UNII: 495W7451VQ) (GUAIFENESIN - UNII:495W7451VQ) GUAIFENESIN400 mg
    Inactive Ingredients
    Ingredient NameStrength
    SILICON DIOXIDE (UNII: ETJ7Z6XBU4)  
    CROSCARMELLOSE SODIUM (UNII: M28OL1HH48)  
    MALTODEXTRIN (UNII: 7CVR7L4A2D)  
    MICROCRYSTALLINE CELLULOSE (UNII: OP1R32D61U)  
    POVIDONE (UNII: FZ989GH94E)  
    STEARIC ACID (UNII: 4ELV7Z65AP)  
    Product Characteristics
    ColorwhiteScoreno score
    ShapeOVALSize17mm
    FlavorImprint Code G400
    Contains    
    Packaging
    #Item CodePackage DescriptionMarketing Start DateMarketing End Date
    1NDC:55681-311-03300 in 1 BOTTLE; Type 0: Not a Combination Product07/01/2022
    Marketing Information
    Marketing CategoryApplication Number or Monograph CitationMarketing Start DateMarketing End Date
    OTC Monograph DrugM01207/01/2022
    Labeler - TWIN MED LLC (009579330)
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