Robitussin

Robitussin is a brand name and registered trademark for both over-the-counter (OTC) and prescription cough and cold medicines manufactured by Pfizer. Robitussin products are available in many countries worldwide, though formulations and regulatory standards differ between countries. Robitussin is manufactured on Darbytown Road in Richmond, Virginia, at a site once owned by the drug's developer, AH Robins; its generic versions are manufactured by Qualitest.

Robitussin was originally produced by AH Robins of Richmond, Virginia. AH Robins was purchased by American Home Products (AHP) in the late 1980s. AHP subsequently merged with Wyeth. Wyeth placed manufacturing and marketing of the brand under its Whitehall-Robins Healthcare division. Production was taken over by Pfizer when it acquired Wyeth in 2009.

During the 1970s and early 1980s, Merrell Dow Pharmaceuticals sold similar cough syrups (differing slightly in flavor, but pharmacologically identical) under the names "2/G" (a reference to "glyceryl guaiacolate," an older name for guaifenesin) for the base expectorant formulation and "2G/DM" for the guaifenesin/dextromethorphan formulation.

The brand name Robitussin is used for several formulations of cough and cold medicine that contain different active ingredients:

Robitussin DAC is used to treat acute cough, mucus buildup and nasal congestion. Because this medicine contains codeine, it is usually only prescribed when a patient has a painful and persistent cough, and/or one that interferes with the patient's sleep cycle. Each 5 mL of Robitussin DAC contains 10 mg of codeine, 100 mg of guaifenesin, and 30 mg of pseudoephedrine.

Robitussin AC is Robitussin DAC without the pseudoephedrine. The taste mimics cherries but is said to have an unpleasant after-taste. The version of Robitussin AC with promethazine is usually flavored peach-mint or grape/menthol. These syrups are purple instead of red. Robitussin AC has a 3.5% alcohol content, and the versions with promethazine have 7% alcohol.

Generic forms are available under the names Cheratussin DAC and Cheratussin AC.

...
Wikipedia