Although Attempts Are Made to Standardize the Flavones in Gingko

Although attempts are made to standardize the flavones in gingko, the nurse is aware that the ingredients contained in the product can still be particularly dangerous for which clients?

A) Those who are allergic to the inert ingredients
B) Those using a generic brand of the herbal product
C) Clients who have never taken the drug
D) Clients who are of African-American ethnicity