One particular concern with the use of herbal medicines is that ...

[Garrulous]

One particular concern with the use of herbal medicines is that the ____ cannot always be controlled.
 a. potency
  b. timing
  c. means of ingestion
  d. design
  e. marketing

Question 2

Which weight loss and energy supplement can cause high blood pressure, rapid heart rate, tremor, seizures, headaches, insomnia, stroke, and even death?
 a. probiotics
  b. ephedra
  c. ginkgo biloba
  d. kava
  e. chaparral

[Tonyam972]

Answer to Question 1

a

Answer to Question 2

b

[Garrulous]

Excellent

[cassie_ragen]

Thanks for the timely response, appreciate it