Maximum Strength Mucinex DM breaks up mucus and quiets wet and dry coughs. Mucinex DM is specially formulated in a bi-layer tablet. The immediate release layer goes to work fast while the extended release layer continues to work for 12 hours. Maximum Strength Mucinex DM has the maximum amount of medicine to fight chest congestion and wet and dry coughs for 12 hours.

Quiets wet and dry coughs
Thins and loosens mucus that causes chest congestion
Starts to work right away and lasts for 12 hours
Extended-release bi-layer tablet

Active Ingredients: In Each Extended-Release Bi-Layer Tablet: Dextromethorphan HBr (60 mg) Guaifenesin (1200 mg). Purposes: Cough Suppressant Expectorant. Inactive Ingredients: Carbomer Homopolymer Type B DandC Yellow 10 Aluminum Lake Hypromellose USP Magnesium Stearate NF Microcrystalline Cellulose NF Sodium Starch Glycolate NF.