What does "t.i.d." mean in a medication dosage?

The abbreviation "t.i.d." stands for the Latin phrase "ter in die," which translates to "three times a day." This notation is commonly used in prescribing medications to indicate the frequency with which a medication should be taken throughout the day. It is essential to understand this term as it helps in the proper administration of medication, ensuring that patients receive their doses at appropriate intervals to maintain therapeutic levels in the body.

In contrast, the other options reflect different dosing schedules: "once daily" refers to taking medication just once each day, "twice a day" indicates dosing two times a day, and "four times a day" requires taking medication four times throughout the day. Understanding these distinctions is crucial for medication adherence and achieving the desired therapeutic effect.