What does b.i.d. indicate in dosing frequency?

What does b.i.d. indicate in dosing frequency?

• A. Once daily
• B. Three times daily
• C. Nightly
• D. Twice daily

Answer: (D)

Understanding dosing abbreviations in prescriptions is about how often a medication should be given. b.i.d. stands for bis in die, a Latin term that means two times per day. Practically, this is usually spaced roughly 12 hours apart so drug levels stay more constant across the day, though exact times may depend on the specific medication and veterinary instructions. This differs from other common terms: once daily means once every 24 hours, three times daily means about every 8 hours, and nightly (often written as at bedtime) does not describe a two-dose-per-day pattern. So, two administrations per day is exactly what b.i.d. indicates.

Understanding dosing abbreviations in prescriptions is about how often a medication should be given. b.i.d. stands for bis in die, a Latin term that means two times per day. Practically, this is usually spaced roughly 12 hours apart so drug levels stay more constant across the day, though exact times may depend on the specific medication and veterinary instructions. This differs from other common terms: once daily means once every 24 hours, three times daily means about every 8 hours, and nightly (often written as at bedtime) does not describe a two-dose-per-day pattern. So, two administrations per day is exactly what b.i.d. indicates.