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Robitussin-AC is not an over-the-counter medication; it is available only by prescription. Robitussin-AC is also known by its generic name, which is codeine and quaifenesin, according to Drugs.com.


Robitussin Cough & Cold medicine contains the active ingredients guaifenesin, dextromethorphan and pseudoephedrine, according to WebMD. This combination treats cold, flu and allergy symptoms, such as cough, congestion and runny nose.


Robitussin DM is used to relieve congestion and coughing caused by the common cold, according to WebMD. The active ingredient dextromethorphan acts as a cough suppressant, while guaifenesin acts as an expectorant by loosening mucus for easier expulsion.


Cough and cold products such as Robitussin should not be used to treat children younger than 6 years without the advice of a doctor, according to WebMD. Children younger than 12 should not take some products, such as long-acting tablets and capsules.


Robitussin DM's two active ingredients are dextromethorphan, which is a cough suppressant, and guaifenesin, which is an expectorant. Some of Robitussin DM's inactive ingredients are menthol, high fructose corn syrup, purified water, propylene glycol and anhydrous citric...


The proper adult dosage of Robitussin Multi-Symptom Cold CF is 10 milliliters every four hours, states Pfizer. The formulation contains an expectorant and cough suppressant to relieve chest congestion and coughing and a decongestant to relieve clogged nasal passages. Th...


The active ingredients of guaiphenesin and dextromethorphan in Robitussin DM are manufactured by Pfizer, according to Pfizer's website. There is no information on the source of inactive ingredients in Robitussin DM. This medication is sugar-free and suitable for childre...