Vicks® Casero™ is a line of products that combines therapeutic ingredients with natural ingredients for when you have a cold. Vicks Casero Chest Congestion Relief with honey and menthol contains guaifenesin to break up phlegm and clear passageways to give you the chest congestion relief you need. Apply Vicks Casero Cough Suppressant/Topical Analgesic to your chest and throat to relieve coughing due to the common cold and to your muscles and joints to temporarily relieve minor aches and pains.