The Pure Food and Drug Act (PFDA) of 1906 was significant in that it gave the government the power to prohibit drug labels from claiming false therapeutic benefits. However, there were still several weaknesses in the legislature of this act. Which statements most accurately describe these weaknesses? Select all that apply.
1. This law did not require drug manufacturers to prove that the drug was effective in its claims.
2. This law did not prevent drugs from being marketed for any disease.
3. This law required all drug labels to accurately describe their contents.
4. This law required adequate testing for safety prior to marketing.
5. This law did not encourage the development of drugs for rare or unusual disorders.