bid, b.i.d stands for?

• A. Two times a day
• B. Two times a week
• C. Before meals
• D. Evening times

Answer: (A)

Understanding how medications are scheduled helps ensure correct dosing. Bid, b.i.d. is the Latin abbreviation bis in die, meaning twice in a day. So the dose should be given two times within a 24-hour period, typically morning and evening.

Other schedules describe different patterns: twice a week is not the same as twice in one day; before meals is usually written as ac (ante cibum) or simply “before meals,” and evening times are often noted as hs (at bedtime) or pm. Knowing these abbreviations helps you follow the prescriber’s instructions accurately.