A Client Reports Taking "All Natural" Echinacea Daily to Prevent

A client reports taking "all natural" echinacea daily to prevent colds and the flu. Which response should the nurse make to this client?

A) "I've heard many people say that it helps to prevent the flu."
B) "All-natural products are safe to use so you don't have to worry about it."
C) "Some dietary supplements may interact with other medications, but since echinacea is a plant you don't have to worry."
D) "Before taking any dietary supplement you should discuss potential adverse side effects with your healthcare provider."