








🌟 Breathe Easy, Live Bold: 12 Hours of Chest Congestion Freedom
Mucinex Chest Congestion Expectorant offers a clinically proven 12-hour extended-release formula with 600mg guaifenesin per tablet to thin and loosen mucus, providing long-lasting relief from chest congestion caused by excess mucus. Designed for adults and teens 12+, its dual-layer technology delivers both immediate and sustained action, ensuring productive coughs and clearer lungs. Trusted for quality and safety, this pack of 20 tablets (sold in a convenient 2-pack) is your go-to solution for powerful, all-day cold and flu symptom relief.












| ASIN | B0CJMBRXDN |
| Best Sellers Rank | #3,258 in Health & Household ( See Top 100 in Health & Household ) #34 in Cold & Flu Medicine #440 in Sales & Deals |
| Customer Reviews | 4.7 4.7 out of 5 stars (3,312) |
| Date First Available | November 7, 2025 |
| Is Discontinued By Manufacturer | No |
| Item model number | RAC00820 00820 |
| Manufacturer | Reckitt Benckiser Healthcare |
| Product Dimensions | 0.88 x 3.5 x 3.78 inches; 0.14 ounces |
P**S
Quality and Price
Works great
C**.
Good product
Good product to aid if you have mucus issues.
R**E
Helps break up mucus
I always choose Mucinex for congestion It is the best solution for me. I can feel a difference overnight
M**E
Helped
Helped a lot with my cold. Tried everything. Nothing was working. Tried this product and it worked wonders
C**E
Not certified gluten free
I can’t be sure but I think this may contain gluten. I looked it up and the company does not certify this as gluten free but does not contain any gluten ingredients. So possibly cross contamination. If you are celiac use with caution. It was disappointing because it was helping with my cough.
S**E
Awesome price
Great price! Much more expensive in the stores, and I love this Mucinex it works great with colds and even thick mucus with allergies.
S**1
Less is more
I always use Mucinex when I'm congested and coughing, but really need the extra strength. The 12 hour tablets are the absolute best because I really don't enjoy taking a lot of medicine, but with Mucinex, all I typically need is one a day.
P**Y
Mucinex
This is a great product and Amazon delivered overnight! We have 6 inches of snow so I couldn’t go to the store. Thank goodness for Amazon.
S**Y
Good
V**N
This is a great product. Though I am not very sure of taking it w/o consulting a doctor first. It loosens up mucus but coughing up and removing it may not always be possible. So other medication may be required if the chest congestion persists like it did in my case. Always consult a doctor first!
Trustpilot
1 month ago
1 day ago