History
Robitussin was originally produced by AH Robins of Richmond, Virginia. AH Robins was purchased by American Home Products (AHP) in the late 1980s. AHP later changed its name to Wyeth. Wyeth put the 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.
Read more about this topic: Robitussin DAC
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