Mucinex 12-Hour Chest Congestion Expectorant Tablets (120 ct.)


In stock

  • Relieves chest congestion caused by excess mucus
  • Quickly thins and loosens mucus
  • Long-lasting relief for up to 12 hours
  • Extended release bi-layer tablets for immediate relief that lasts
  • #1 doctor-recommended OTC expectorant among internists, general practitioners, and family practitioners

No one likes to be sick, but Mucinex 12-Hour Chest Congestion Expectorant Tablets (120 ct.) makes every sick day a little easier. Mucus is a master of mayhem. It crowds your nose, throat and makes you miserable.

Does Mucinex Start Working Quickly?

The best chest congestion medicine provides quick, long-lasting relief. When it comes to chest congestion medicine, Mucinex provides great relief. And that relief is just one dose away. Mucinex expectorant tablets get to work fast and last for 12 hours. Mucinex 12-Hour Chest Congestion Expectorant Tablets give you the relief you need whenever the untimely cold comes your way.

What Does Mucinex Relieve?

Mucinex 12-Hour Chest Congestion Expectorant Tablets relieves chest congestion that’s caused by excessive mucus. Mucinex works by thinning and loosening mucus. And with extended release, Bi-Layer™ tablets, you’ll have effective relief for up to 12 hours. Chest congestion occurs when the mucus membranes in your airways are pushed into overdrive. Whether it’s the common cold or irritants like dust, your mucus membrane becomes inflamed and causes excess mucus buildup in your airways. The buildup of mucus serves as a way to rid your body of your illness or the irritant your breathed in. Mucinex helps dissolve the mucus buildup so you can breathe normally again.

Stock Up Now

Stock up on Mucinex now. Future you will be very glad you did. Conveniently order your medicine online and have it shipped to your doorstep. Or pick up the Mucinex during your next trip to your local Sam’s Club.


  • 120 ct.
  • 600 mg. gualfenesin (expectorant)
  • For ages 12 and older
  • Do not crush, chew, or break tablet
  • Take with a full glass of water
  • Take 1-2 tablets every 12 hours
  • Do not exceed 4 tablets in 24 hours
  • Use as directed

While we strive to obtain accurate product information, we cannot guarantee or ensure the accuracy, completeness or timeliness of any product information. Carefully read and follow all package directions. assumes no liability for inaccuracies or misstatements about products.

Shipping Info
Standard – 4 to 10 business days
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This product is covered by the Sam’s Club Member Satisfaction Guarantee.
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