The impact of exposure to FDA e-cigarette authorization messages on product perceptions and interest - an experiment with adults who smoke and youth.

This study provides new data about the potential impact of messages about FDA authorization of e-cigarette products (presented as ad claims or a news story) on authorized product perceptions, interest and susceptibility among adults who smoke cigarettes and youth. Our results suggest that FDA e-cigarette authorization messages may impact harm-related beliefs among adults who smoke and product susceptibility among youth who have ever used e-cigarettes before, though real-world effects are likely to be impacted by message type and format, and perceived message source and credibility. Authorization messages are likely to be misinterpreted as "FDA approval" by some; therefore, providing clarifications about authorization meaning and standards are relevant where possible.