Children's Mucinex Multi-Symptom Cold Liquid Very Berry is a non-drowsy, over-the-counter medicine that helps relieve the symptoms of a cold, including stuffy nose, cough, and chest congestion. It is available in a 4-ounce bottle and is for children ages 4 and older. The recommended dosage is 5 milliliters (mL) every 4 hours, up to 4 times daily. Do not give more than 20 mL in a 24-hour period. Key active ingredients in Children's Mucinex Multi-Symptom Cold Liquid Very Berry: Guaifenesin: An expectorant that helps to loosen mucus in the airways. This makes it easier to cough up mucus and clear the airways. Dextromethorphan HBr: Is a cough suppressant that helps to reduce the frequency and severity of coughs. Phenylephrine HCl:Is a nasal decongestant that helps to shrink blood vessels in the nose, which reduces swelling and congestion.