What does "a.c." or "ac" signify regarding medication intake?

The abbreviation "a.c." or "ac" stands for "ante cibum," which is a Latin term meaning "before meals." This indicates that a medication should be taken prior to eating, ensuring that the drug is absorbed properly and has the intended effect on an empty stomach.

Administering medications before meals can be important for certain drugs that are better absorbed without the interference of food or to ensure optimal efficacy. Understanding these terms is crucial for managing medication regimens, especially in clinical settings. In contrast, the other choices refer to different instructions related to meal timing that do not apply in this case.