--- product_id: 6543449 title: "12 Hour Maximum Strength 1200 mg Guaifenesin Extended-Release Tablets for Excess Mucus Relief, Expectorant Aids Excess Mucus Removal, Chest Congestion Relief, 28 Tablets" brand: "mucinex" price: "£22.58" currency: GBP in_stock: true reviews_count: 8 category: "Mucinex" url: https://www.desertcart.co.uk/products/6543449-12-hour-maximum-strength-1200-mg-guaifenesin-extended-release-tablets store_origin: GB region: United Kingdom --- # 12-hour extended relief 1200 mg guaifenesin strength bi-layer immediate + extended release 12 Hour Maximum Strength 1200 mg Guaifenesin Extended-Release Tablets for Excess Mucus Relief, Expectorant Aids Excess Mucus Removal, Chest Congestion Relief, 28 Tablets **Brand:** mucinex **Price:** £22.58 **Availability:** ✅ In Stock ## Summary > 💨 Breathe freely, conquer your day — no congestion can hold you back! ## Quick Answers - **What is this?** 12 Hour Maximum Strength 1200 mg Guaifenesin Extended-Release Tablets for Excess Mucus Relief, Expectorant Aids Excess Mucus Removal, Chest Congestion Relief, 28 Tablets by mucinex - **How much does it cost?** £22.58 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/6543449-12-hour-maximum-strength-1200-mg-guaifenesin-extended-release-tablets) ## Best For - mucinex enthusiasts ## Why This Product - Trusted mucinex brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Maximum Strength Formula:** 1200 mg guaifenesin to break up mucus fast and effectively. - • **All-Day Congestion Control:** Stay unstoppable with 12 hours of powerful chest relief. - • **Effortless Cold & Flu Defense:** Clear your chest and breathe easy through your busiest days. - • **Dual-Action Bi-Layer Technology:** Immediate relief meets sustained comfort in one tablet. - • **Trusted by Experts & Users Alike:** #1 doctor and pharmacist recommended expectorant brand. ## Overview Mucinex Maximum Strength 12 Hour Tablets deliver 1200 mg of guaifenesin in a unique bi-layer extended-release formula, providing fast and sustained relief from chest congestion and excess mucus. Clinically proven and trusted by healthcare professionals, this expectorant supports productive coughs and helps you power through cold and flu symptoms for up to 12 hours. ## Description From the Manufacturer When mucus builds up in your chest, congestion can get in the way of your day. Maximum Strength Mucinex extended-release bi-layer tablets fight bothersome chest congestion for 12 hours so you can focus on your life and forget about congestion.Fast-Acting, Long-Lasting ReliefMaximum Strength Mucinex extended-release tablets break up the mucus that causes chest congestion, providing you with fast-acting and long-lasting relief. With 12 hours of relief from chest congestion, you can make it through a workday without congestion getting in your way.Get 12 Hours of ReliefOnly Mucinex has an extended release bi-layer tablet to deliver maximum-strength congestion medicine. The first layer is absorbed quickly by your body for fast-acting relief. The other layer dissolves slowly to continue relieving your chest congestion for 12 hours.Mucinex: #1 with Doctors, Pharmacists, and ConsumersYou're too busy with family, home, and work to let sickness slow you down. You need a brand you can trust to get the job done. That's why there's Mucinex. Mucinex is the #1 doctor recommended1, #1 pharmacist recommended2 3 and #1 most popular4 OTC expectorant brand. Mucinex products all have the dependable, mucus-busting power to show Mr. Mucus the way out of your system so you can keep up with life.What's in the BoxOne box of Maximum Strength Mucinex extended-release bi-layer tablets (28 tablets per box).Maximum Strength MucinexRelieves these Symptoms:Relieves chest congestionThins and breaks up mucus to make coughs more productiveUse as directed.Mucinex Has Products for All of Your Worst Symptoms 12 Hour Relief (Tablets)Chest CongestionDry CoughNasal Congestion Maximum Strength Mucinexx Mucinexx Maximum Strength Mucinex DMxx Mucinex DMxx Maximum Strength Mucinex Dxx Mucinex Dxx1 Mucinex is the #1 doctor-recommended OTC expectorant among internists, general practitioners, and family practitioners. IMS Health, NDTI (National Disease Therapeutic Index), MAT 52 Weeks Ending March 2012.2 OTC Expectorants: 2012 Survey of Pharmacist Recommendations: Pharmacy Times, June 2012.3 Among Adult Expectorants and Adult Multisymptom Cold or Flu products. Pharmacy Today Annual Over-the-Counter Survey, February 2012.4 Based on Symphony IRI unit sales data for the 52-week period ending November 25, 2012. Product Description Are you searching for reliable chest congestion relief for adults? Look no further than our Maximum Strength Mucinex 12 Hour Expectorant for excess mucus relief. Featuring a robust 1200mg of guaifenesin, this top-notch expectorant thins and loosens mucus thereby making coughs more productive. When the cold and flu season hits, trust Mucinex for powerful chest congestion relief. Our original bi-layer tablet provides immediate and extended-release and lasts up to 12 hours. Use as directed, for Adults and Children 12 years of age and over. ## Features - EXCESS MUCUS RELIEF: Maximum Strength Mucinex 12hr extended-release tablets pack a powerful punch with 1200 mg guaifenesin expectorant, providing you with long-lasting chest congestion relief - AIDS EXCESS MUCUS REMOVAL: Maximum strength chest congestion relief; Mucinex 12hr lasts up to 12 hours and provides relief for your chest congestion and makes cough more productive - EXPECTORANTS FOR ADULTS: Mucinex helps clear lungs by thinning & loosening mucus; Say goodbye to excess mucus, say hello to chest congestion relief - EXTENDED RELEASE GUAIFENESIN: Experience long-lasting excess mucus relief with Mucinex's 12hr maximum strength extended-release 1200 mg guaifenesin bi-layer tablets with immediate & extended release - COLD AND FLU MEDICINE FOR ADULTS: For powerful cough, cold, and flu multi-symptom relief, check out our range of Mucinex Fast-Max cold and flu medicines; Beat cold and flu symptoms with confidence - USAGE: Use as directed; For ages 12+ years - QUALITY YOU CAN TRUST: Mucinex uses carbomer that is manufactured without the use of benzene ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000V83X6Y | | Active Ingredients | Guaifenesin | | Additional Features | Clinically Proven | | Age Range Description | Adults, children over 12 years | | Best Sellers Rank | #56,110 in Health & Household ( See Top 100 in Health & Household ) #295 in Cold & Flu Medicine | | Brand | Mucinex | | Brand Name | Mucinex | | Container Type | Box | | Customer Reviews | 4.8 out of 5 stars 3,122 Reviews | | Flavor | unflavored | | Item Dimensions | 6 x 5 x 4 inches | | Item Form | Tablets | | Item Weight | 2.08 Ounces | | Item dimensions L x W x H | 6 x 5 x 4 inches | | Manufacturer | Reckitt Benckiser Healthcare | | Manufacturer Part Number | RAC02328 | | Model Name | See packaging | | Model Number | RAC02328 | | Net Content Count | 28 Count | | Number of Items | 1 | | Package Type Name | Blister | | Product Benefits | Loosens | | Specific Uses For Product | Cold, Cough | | Target Audience | Unisex-Adults, Unisex-Kids | | Target Use Body Part | Whole Body | | UPC | 363824023281 | | Unit Count | 28 Count | ## Product Details - **Brand:** Mucinex - **Item Weight:** 2.08 Ounces - **Item dimensions L x W x H:** 6 x 5 x 4 inches - **Product Benefits:** Loosens - **Specific Uses For Product:** Cold, Cough ## Images ![12 Hour Maximum Strength 1200 mg Guaifenesin Extended-Release Tablets for Excess Mucus Relief, Expectorant Aids Excess Mucus Removal, Chest Congestion Relief, 28 Tablets - Image 1](https://m.media-amazon.com/images/I/71yKzahyBZL.jpg) ![12 Hour Maximum Strength 1200 mg Guaifenesin Extended-Release Tablets for Excess Mucus Relief, Expectorant Aids Excess Mucus Removal, Chest Congestion Relief, 28 Tablets - Image 2](https://m.media-amazon.com/images/I/71mdZi+yThL.jpg) ![12 Hour Maximum Strength 1200 mg Guaifenesin Extended-Release Tablets for Excess Mucus Relief, Expectorant Aids Excess Mucus Removal, Chest Congestion Relief, 28 Tablets - Image 3](https://m.media-amazon.com/images/I/81Vg8hgLh3L.jpg) ![12 Hour Maximum Strength 1200 mg Guaifenesin Extended-Release Tablets for Excess Mucus Relief, Expectorant Aids Excess Mucus Removal, Chest Congestion Relief, 28 Tablets - Image 4](https://m.media-amazon.com/images/I/71QXl4tza+L.jpg) ![12 Hour Maximum Strength 1200 mg Guaifenesin Extended-Release Tablets for Excess Mucus Relief, Expectorant Aids Excess Mucus Removal, Chest Congestion Relief, 28 Tablets - Image 5](https://m.media-amazon.com/images/I/71YrdlikUbL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What is the difference between mucinex and mucinex dm?** A: Per the internet, Mucinex Dm (Dextromethorphan / Guaifenesin) is okay for loosening congestion in your chest and throat, but it could prevent you from coughing the mucus up. It comes as an extended-release tablet and a short-acting liquid. Mucinex (Guaifenesin) reduces the thickness and amount of mucus in your throat and chest. **Q: How long is the Exp. date on the Musinex 28 count?** A: 1/2021 is the shortest expiration date that we have... **Q: Unless this is 2 boxes of 28, your count per pill is wrong. It would be .89/count and not .45/count, so is it one box or two?** A: I received two boxes (one each of 14 individually blistered packets) equaling 28 pills). **Q: what is the expiration date on the package?** A: All items sold by EJ Sears Enterprizes have a date of one year or better on an expiration. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by P***. on February 23, 2026* ### ⭐⭐⭐⭐⭐ Review *by H***P on November 6, 2025* ### ⭐⭐⭐⭐⭐ Review *by R***W on January 30, 2026* ## Frequently Bought Together - Mucinex Maximum Strength 12 Hour Chest Congestion Expectorant Relief Tablets, 1200 mg, Thins & Loosens Mucus, 28 Count - Mucinex Chest Congestion Maximum Strength 12 Hour Extended Release Tablets Relieves Chest Congestion Caused by Excess Mucus(#1 Doctor Recommended OTC expectorant), 1200mg, 42 Count (Pack of 1) - Geritol Liquid Vitamin and Iron Supplement, Energy Support, Contains High Potency B-Vitamins and Iron, Pleasant Tasting, Easy to Swallow, No Artificial Sweeteners, Non-GMO, 12 Oz --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/6543449-12-hour-maximum-strength-1200-mg-guaifenesin-extended-release-tablets](https://www.desertcart.co.uk/products/6543449-12-hour-maximum-strength-1200-mg-guaifenesin-extended-release-tablets) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-24*