Question

Which among the following is the narrow-spectrum antibiotic?

• A. Penicillin G
• B. Ampicillin
• C. Amoxycillin
• D. Chloramphenicol

Answer 1

The correct option is A

Penicillin G

The correct option is A.

Explanation of the correct option:

1. The narrow-spectrum antibiotic means the antibiotic that only kills bad, pathogenic bacteria and lets good bacteria undisturbed.
2. Penicillin G is a medicine used for oral medication and against susceptible bacterial diseases.
3. It only destroys targeted bad bacteria and penicillin-resistant bacteria still live.
4. It is a narrow-spectrum antibiotic.

Explanation of the incorrect answers:

Option B:

Ampicillin is a broad-spectrum antibiotic that can destroy both gram-positive and gram-negative bacteria.

Option C:

Amoxicillin is a moderate-spectrum antibiotic against respiratory tract disease.

Option D:

Chloramphenicol is a broad-spectrum antibiotic against ocular disease.

Final answer:

Penicillin G is a narrow-spectrum antibiotic.