Marketing a health Brand on Facebook: Effects of reaction icons and user comments on brand attitude, trust, purchase intention, and eWOM intention.

This study examined effects of Facebook reaction icons and user comments on brand attitude, trust, information seeking, purchase intention, and eWOM intention towards a health brand, as well as potential moderating effects of SNS use. Results of a 3 (reaction icons: positive/neutral/negative) × 3 (valence of comments: positive/neutral/negative) between-subjects experiment (N = 306) indicated that positive Facebook reaction icons significantly influenced brand attitude, trust, purchase intention, and eWOM intention, while neutral comments significantly impacted brand attitude and trust. The degree of SNS use also negatively moderated between reaction icon valence and eWOM intention. Implications for health marketing communication are discussed.