This medicine is intended for the temporary relief of symptoms such as cough, chest congestion, fever, body aches, and a blocked nose that are commonly associated with colds, flu, and respiratory illnesses such as sinusitis and bronchitis. The active ingredients in this medication work together to alleviate these symptoms. Guaifenesin, an expectorant, thins and loosens mucus in the lungs, making it easier to cough up. Dextromethorphan, a cough suppressant, reduces the urge to cough by affecting a specific part of the brain known as the cough center. Decongestants help alleviate stuffy nose symptoms. This product also contains acetaminophen, a non-aspirin pain reliever and fever reducer.