Mucinex 12-Hour Chest Congestion & Mucus Relief Tablets provide fast-acting, long-lasting relief from chest congestion caused by excess mucus. When colds, allergies, or irritants trigger mucus buildup in your airways, Mucinex helps you breathe easier with just one dose.
Fast Relief That Lasts 12 Hours
Don’t let chest congestion slow you down. Mucinex 12-Hour Expectorant Tablets start working quickly and deliver effective relief for up to 12 hours with extended-release Bi-Layer™ tablets. Get the chest congestion medicine you need whenever illness strikes, with convenient dosing that fits your busy life.
How Mucinex Works
Mucinex relieves chest congestion by thinning and loosening excess mucus in your airways, making coughs more productive and helping you breathe normally again. When mucus membranes become inflamed from colds, infections, or allergies, the buildup can make you miserable. Mucinex dissolves this mucus so your body can clear congestion naturally and efficiently.
Active Ingredient
Each tablet contains 600 mg of Guaifenesin, a proven expectorant that reduces chest congestion and thins mucus in the air passages. Guaifenesin makes it easier to cough up mucus and provides relief from congestion caused by colds, infections, and allergies.
Stock Up Today
Get 120 tablets of Mucinex 12-Hour Chest Congestion Relief and keep your medicine cabinet stocked. Order online for convenient delivery to your door, or pick up at your local Sam’s Club.






















