Alan Is a 30-Year-Old Man Who Has Recently Lost 30

Multiple Choice

Alan is a 30-year-old man who has recently lost 30 pounds.He lost the excess weight by watching his diet and working out.He still would like to lose the last ten pounds he gained through his 20s,most of which is in his abdominal area.Recently,he has become frustrated because his weight loss has slowed down.He has seen advertisements on the Internet and in several fitness magazines for a weight-loss supplement called Acai Berry Plus.The product ads state that the powerful antioxidants in the supplement will melt away abdominal fat and remove waste from the body while he is sleeping.Alan is tempted to purchase the product in an attempt to quickly lose that last ten pounds.However,before he decides to purchase the Acai Berry Plus supplement,he learns that there are ingredients in the product he is unfamiliar with.The ingredients list declares the product contains ephedra,ginseng,coenzyme Q10,acai berry extract,chromium,potassium,caffeine,and wheat.
-Which ingredient in the supplement has been found to be unsafe or ineffective according to human studies with various herbal remedies?

A) acai berry extract
B) ephedra
C) coenzyme Q10
D) caffeine
E) chromium