Multiple choice

Which of the following species of penicillin is used only orally?

  1. Penicillin G

  2. Benzathine penicilline G

  3. Procaine penicillin G

  4. Penicillin V

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Penicillin V (phenoxymethylpenicillin) is the only penicillin listed that can be administered orally because it is acid-stable and survives gastric digestion. Penicillin G, Benzathine penicillin G, and Procaine penicillin G are all parenteral formulations given by injection as they are destroyed by stomach acid.

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