Dietary supplements (DS) have been widely used by consumers, but the information around the effectiveness and safety of DS is disparate or incomplete, making barriers to consumers to find information effectively. Conversational agent  systems have been applied to the healthcare domain  but there is no such a system to answer consumers regarding DS use, although widespread use of the dietary supplement . In this study, we develop the first conversational agent system for DS use .
Dietary supplements (DS) have been widely used by consumers, but the information around the efficacy and safety of DS is disparate or incomplete, thus creating barriers for consumers to find information effectively. Conversational agent (CA) systems have been applied to the healthcare domain , but there is no such a system to answer consumers regarding DS use, although widespread use of DS . In this study, we develop the first CA system for DS use 
R
effectiveness
efficacy
R
making barriers to
thus creating barriers for
A
(CA)
A
,
R
the dietary supplement
DS
R
conversational agent
CA
D
.