Mucinex Maximum Strength 12-Hour Chest Congestion Expectorant Tablets, 1200 mg Guaifenesin, 14 Extended Release Tablets Sale! from 1589 1907 /per Qty. Add to Cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Maximum Strength Chest Congestion Medicine Thins & loosens mucus with active ingredient guaifenesin expectorant Relieves Chest Congestion Mucinex contains a unique bi-layer tablet, one side immediately releases and the other side is an extended release that lasts up to 12 hours Qty available:60 Tweet