Mucinex 12-Hour Chest Congestant & Mucus Relief Tablets, 600 mg Guaifenesin 120 ct.

Item # 980115815
Current price is $39.98
$0.33/ea
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Highlights

Product is FSA & HSA eligible.

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  • One 120 count resealable bottle of relief tablets
  • Quickly thins and loosens excess mucus, relieving chest congestion and providing long-lasting relief for up to 12 hours
  • Each extended-release bi-layer tablet contains 600mg of the active ingredient, Guaifenesin
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Mucinex 12-Hour Chest Congestant & Mucus Relief Tablets, 600 mg Guaifenesin 120 ct.
Mucinex 12-Hour Chest Congestant & Mucus Relief Tablets, 600 mg Guaifenesin 120 ct.
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About this item

Product details

No one likes to be sick, but Mucinex 12-Hour Chest Congestion Expectorant Tablets 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.

Active Ingredient

Contains Guaifenesin which is an expectorant that relieves chest congestion and thins and loosens mucus making coughs more productive. Guaifenesin 600 mg is an expectorant that helps reduce chest congestion caused by colds, infections, or allergies. It works by thinning the mucus in the air passages and makes it easier to cough up.

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.

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Specifications

  • Use Instructions: Do not crush, chew, or break tablet. Take with a full glass of water. This product can be administered without regard for timing of meals. Adults and children 12 years of age and over: 1 or 2 tablets every 12 hours. Do not exceed 4 tablets in 24 hours. Children under 12 years of age: do not use. Use as directed
  • Purchase Includes: 120ct unique bi-layer tablet, one layer for immediate release and one layer for extended release
  • FSA/HSA Eligible: Yes
  • Allergens + 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 too much phlegm (mucus). Stop use and ask a doctor if cough lasts more than 7 days, comes back, or occurs with fever, rash, or persistent headache. These could be signs of a serious illness. If pregnant or breast-feeding, ask a health professional before use
  • Ingredients: Guaifenesin, Carbomer Homopolymer, Type B; FD&C Blue No. 1, Aluminum Lake, Hypromellose, USP; Magnesium Stearate, NF; Microcrystalline Cellulose, NF; Sodium Startch Glycolate, NF *IQVIA using ProVoice Survey, December 2022 U.S. News & World Report/Pharmacy Times 2023-2024. **Product eligibility may vary by plan. Check with your benefits administrator to determine which expenses are eligible before you shop. 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. SamsClub.com assumes no liability for inaccuracies or misstatements about products.

Member ratings & reviews

4.8 out of 5 stars
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1,105 ratings210 reviews
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Showing 1-3 of 210 reviews

Sep 10, 2025
JERRY92606
5 out of 5 stars review

Verified Purchase

Mucinex ER works quickly & ongoing RELIEF.

Great Product, helps thin mucus in throat & chest to make it easier to swallow & or clear throat & spit it out. I prefer the 600mg bilayered Extended Release tablet, bc it you need 1 or 2 tablets--taking 1 600 mg gives you more flexibility in when & how you can take it without exceeding the maximum tablets that can be taken in 24 hours. As a suggestion please check with your doctor or pharmacist if you aŕe having other symptoms such as fever &/or difficulty swallowing--you may have a chronic condition that needs other medical attention / treatment.

Helpful?5CSBS325TDSI36382404128
reply from Mucinex Team

We would like the chance to speak with you about your experience with Mucinex® SE. When you have a chance, please give us a call at 1-866-529-8804. We are available Monday to Friday from 9am until 5pm, EST. When calling, kindly refer to reference# 7206240.

Oct 5, 2025
Howard
5 out of 5 stars review

Verified Purchase

Does eliminate my congestion

I have used Mucinex for years. When I need congestion, I turn to Mucinex for 2 reasons. Mucinex is effective at eliminating congestion and is affordable when purchased at SamsClub.

Helpful?5CSBS325TDSI36382404128
Jul 4, 2026
Maria
5 out of 5 stars review

Verified Purchase

Flu

Excellent

Helpful?5CSBS325TDSI36382404128