Of the many adverse effects of tetracycline (Sumycin), one of the most serious is pseudomembranous colitis. This disorder most likely occurs because tetracycline is a(n)
a. broad-spectrum antibiotic.
b. narrow-spectrum antibiotic.
c. highly protein bound medication.
d. acid-labile drug.
ANS: A
Broad-spectrum antibiotics may have the potential to kill a "broad spectrum" of bacteria, including "good" bacteria, such as those that protect the gut; this can lead to pseudomembranous colitis.
Tetracycline is not a narrow-spectrum antibiotic; it also is not highly protein bound or acid labile.
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Chloramphenicol should not be used in food-producing animals because the residual amounts of the drug can pose a threat to humans.
a. true b. false