Which abbreviation signifies a dosage to be taken before meals?

The abbreviation that signifies a dosage to be taken before meals is "ac," which stands for "ante cibum" in Latin. This term translates to "before meals." It is commonly used in medical prescriptions to indicate that a medication should be taken prior to food intake, ensuring that the drug is absorbed effectively without interference from food.

Understanding the context of such abbreviations is essential for ensuring proper medication administration and patient compliance. In contrast, "pc," meaning "post cibum," refers to after meals, which indicates a different timing for medication intake. "Bid" signifies that a medication should be taken twice a day, and "sl" stands for sublingually, indicating a method of administration rather than timing. Hence, recognizing the specific meanings of these abbreviations is crucial for effective pharmacy practice.