IDNLearn.com: Your reliable source for finding expert answers. Our community is ready to provide in-depth answers and practical solutions to any questions you may have.

Drugs such as benzphetamine, diethylpropion, phendimetrazine, and phentermine are only approved for short-term use because:

a. they may cause too much weight loss.
b. they are related to addictive amphetamines.
c. long-term use has not been studied.
d. they may cause shortness of breath.