How do antimicrobial drugs work?

How do antimicrobial drugs work?

• A. Exert a microbiocidal (kill) or microbiostatic (inhibit growth) effect on infectious agents
• B. They only kill viruses
• C. They do not affect bacteria
• D. They only work in combination with antivirals

Answer: (A)

Antimicrobial drugs work by exploiting differences between microbes and human cells to disrupt essential microbial functions. They either kill the microbe (microbiocidal) or prevent it from growing (microbiostatic). The exact effect depends on the drug and the organism: some drugs, like beta-lactams, block cell wall synthesis and are typically bactericidal, while others, like certain protein-synthesis inhibitors, primarily halt growth and rely on the immune system to clear the infection. These drugs are not limited to viruses; they act on bacteria and other microbes as appropriate, and most can be used alone without antivirals.

Antimicrobial drugs work by exploiting differences between microbes and human cells to disrupt essential microbial functions. They either kill the microbe (microbiocidal) or prevent it from growing (microbiostatic). The exact effect depends on the drug and the organism: some drugs, like beta-lactams, block cell wall synthesis and are typically bactericidal, while others, like certain protein-synthesis inhibitors, primarily halt growth and rely on the immune system to clear the infection. These drugs are not limited to viruses; they act on bacteria and other microbes as appropriate, and most can be used alone without antivirals.