The active ingredients in Theraflu Daytime Severe Cold & Cough are acetaminophen, dextromethorphan HBr and phenylephrine HCl, according to Theraflu.com. The ingredients found in Theraflu are commonly used as pain relievers or fever reducers, cough suppressants, and nasal decongestants, respectively.
Each packet of Theraflu contains 650 milligrams of acetaminophen, 20 milligrams of dextromethorphan HBr and 10 milligrams of phenylephrine HCl, according to Theraflu.com. Inactive ingredients include aspartame, maltodextrin, sucrose and assorted food coloring agents.
Theraflu offers an entire line of products dedicated to temporarily alleviating symptoms caused by the common cold, according to Theraflu.com. These products include packets intended for day or night use, and a line of products with Lipton Ice Tea flavors.