DayQuil/NyQuil Severe Combo LiquiCaps by Procter & Gamble is a combination medication that temporarily relieves the symptoms of a cold or the flu, including: Fever Headache Sore throat Cough Runny or stuffy nose Body aches and pains Chills Fatigue DayQuil/NyQuil Severe Combo LiquiCaps are available in a 24-count bottle Each capsule contains the following active ingredients: Acetaminophen (500 milligrams)- A pain reliever and fever reducer Dextromethorphan HBr (15 milligrams)-A cough suppressant Pseudoephedrine HCl (30 milligrams)-A Decongestant,that helps to open up airways and make it easier to breathe. Guaifenesin (400 milligrams)- Is an expectorant that helps to loosen mucus and make it easier to cough up. Dosage: DayQuil/NyQuil Severe Combo LiquiCaps should be taken by adults and children 12 years of age and older. The recommended dose is one capsule every 4 to 6 hours, not to exceed four capsules in 24 hours. Side effects: DayQuil/NyQuil Severe Combo LiquiCaps may cause drowsiness, so it is important to use caution when driving or operating machinery. They may also cause dry mouth, upset stomach, or constipation.