Which of These Drugs Has the Most Narrow-Spectrum Activity

Question

Which of these drugs has the most narrow-spectrum activity?
A) Tetracycline
B) Isoniazid
C) Erythromycin
D) Aminoglycosides
E) Cephalosporins

Accepted Answer

Isoniazid has the most narrow-spectrum activity among the options listed, as it is specifically used for the treatment and prevention of tuberculosis and is not effective against a wide range of other bacteria.