Which penicillin has to be taken 1-2 hours before or after a meal?

Which penicillin has to be taken 1-2 hours before or after a meal?

• A. Penicillin G
• B. Ampicillin
• C. Oxacillin
• D. Amoxicillin

Answer: (D)

Food can slow gastric emptying and alter penicillin absorption, so for some oral penicillins, timing dosing around meals helps ensure reliable bioavailability. Among these options, amoxicillin is the one where meal-related dosing is most commonly emphasized to optimize absorption, roughly 1–2 hours before or after a meal. Penicillin G isn’t used orally in standard practice, oxacillin is mainly given parenterally, and ampicillin’s absorption is less strictly tied to meal timing in many guidelines. So the concept being tested is how meals influence oral penicillin absorption, and amoxicillin is the best fit for this idea.

Food can slow gastric emptying and alter penicillin absorption, so for some oral penicillins, timing dosing around meals helps ensure reliable bioavailability. Among these options, amoxicillin is the one where meal-related dosing is most commonly emphasized to optimize absorption, roughly 1–2 hours before or after a meal. Penicillin G isn’t used orally in standard practice, oxacillin is mainly given parenterally, and ampicillin’s absorption is less strictly tied to meal timing in many guidelines. So the concept being tested is how meals influence oral penicillin absorption, and amoxicillin is the best fit for this idea.