In medical instructions, what does AC stand for?

The abbreviation "AC" in medical terminology specifically stands for "Before meals." This designation is commonly used in medication administration instructions to indicate the timing of when a medication should be taken relative to meal times. Administering medications before meals can enhance absorption and effectiveness, particularly for certain drugs that require an empty stomach to work properly or to minimize adverse side effects that could be triggered by food intake.

In this context, knowing that "AC" refers to timing is crucial for ensuring that patients adhere to the prescribed medication regimen effectively. This understanding aids healthcare providers and patients alike in optimizing treatment outcomes while preventing potential complications associated with improper timing of medication administration.