Why is FDA re-opening a drug-naming study just 3 months after issuing new guidance?

Why is FDA re-opening a drug-naming study just 3 months after issuing new guidance?

Source: 
Fierce Pharma
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Drug names often draw curiosity and confusion—and they always get a once-over by the FDA. The agency is more than usually interested these days, though.

After a round of new guidance issued in December, the FDA is dipping back into the issue by re-opening a proposed study to determine how drug names influence consumers and healthcare providers.