Supplements are
a. only prescribed by a doctor.
b. required to show scientific evidence of effectiveness.
c. regulated and must be approved by the FDA.
d. products such as vitamins, diet pills, protein powders, and others.
D. supplements are used to help you get any vitamins you may not be getting. some supplements are prescribed if you are a baby, pregnant, or nursing. most supplements are like vitamins. you buy them as you need them. Hope that helped.
