Which act is associated with the decline of patent medicines?

• A. Anti-Drug Abuse Act of 1988
• B. Harrison Act of 1914
• C. Narcotics Control Act of 1956
• D. Pure Food and Drug Act of 1906

Answer: (D)

Regulation of medicines through truthful labeling and protection against adulteration is what reduced the prevalence of patent medicines. Before 1906, patent medicines were sold widely with flashy claims and little verification of ingredients. The Pure Food and Drug Act of 1906 required accurate labeling and barred adulteration and misbranding, so companies had to disclose what was in their products and could not make unsubstantiated cure claims. This shift pushed patent medicines out of the market or forced reformulation, paving the way for formal federal drug oversight. Other acts mentioned targeted narcotics or later drug-control issues rather than broad labeling standards that directly curtailed unregulated patent medicines.