Generic name: Acetaminophen, dextromethorphan, and phenylephrine Pregnancy & Lactation: Risk data not available What is Theraflu Severe Cold Relief? Acetaminophen is a pain reliever and fever reducer. Dextromethorphan is a cough suppressant. It affects the signals in the brain that trigger cough reflex. Phenylephrine is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose). Acetaminophen, dextromethorphan, and phenylephrine is a combination medicine used to treat headache, fever, body aches, cough, stuffy nose, and sinus congestion caused by allergies, the common cold, or the flu. This medicine will not treat a cough that is caused by smoking, asthma, or emphysema. Acetaminophen, dextromethorphan, and phenylephrine may also be used for purposes not listed in this medication gu...
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