What does the abbreviation 'ac' stand for in medication administration?

The abbreviation 'ac' stands for "before meals" in the context of medication administration. This term is derived from the Latin phrase "ante cibum," which translates directly to "before food." When a medication is prescribed with 'ac,' it indicates that the patient should take the medication prior to eating to optimize absorption or effectiveness. This timing can be crucial for certain medications that may interact negatively with food or that require an empty stomach for maximum efficacy. It is essential for healthcare providers and patients to understand these abbreviations to ensure proper medication administration and adherence to prescribed treatment regimens.