Which term is used to indicate medication that should be taken four times a day?

The term that indicates medication should be taken four times a day is "QID," which stands for "quater in die," a Latin phrase meaning "four times a day." This designation is used in medical prescriptions to specify the frequency of administration for a medication, ensuring that patients understand how often they need to take their medication for effective treatment.

The other terms, while related to medication administration schedules, specify different frequencies: "QD" means once a day, "BID" means twice a day, and "TID" means three times a day. Understanding these abbreviations is essential for pharmacists and healthcare providers when communicating medication instructions to patients.