What does the medical abbreviation "BID" mean?

• A. Once a day
• B. As needed
• C. Twice daily
• D. Before meals

Answer: (C)

The abbreviation "BID" stands for "bis in die," which is Latin for "twice a day." In medical contexts, it frequently refers to the frequency of medication administration. When a medication is prescribed to be taken BID, it is intended to be taken at two separate times throughout the day, often spaced evenly to maintain a consistent level of the medication in the system. This dosing schedule is common for certain medications that require steady plasma levels for therapeutic effectiveness. Understanding this abbreviation is crucial for accurate medication administration and patient compliance in clinical settings.