BID

BID (an abbreviation for bis in die which in Latin means, "twice a day") is a medical term used for dosing frequency of medication. It is one of the many abbreviations used by healthcare professionals to denote the frequency with which medicines should be taken.

Etymology[edit | edit source]

The term BID is derived from the Latin phrase bis in die which translates to "twice a day". This is part of a series of Latin abbreviations that are used in the medical field to provide instructions on the frequency of medication intake. Other related terms include QD (quaque die, once a day), TID (ter in die, three times a day), and QID (quater in die, four times a day).

Usage[edit | edit source]

BID is commonly used in medical prescriptions to indicate that a medication should be taken twice daily. It is typically written before or after the name of the drug prescribed. For example, a prescription might read "Amoxicillin 500 mg BID" which means the patient should take 500 milligrams of Amoxicillin twice a day.

It's important to note that while BID is a widely recognized abbreviation, the Institute for Safe Medication Practices recommends the use of complete time-frequency terms in prescriptions to avoid confusion and prevent medication errors.

Related Terms[edit | edit source]

QD - quaque die, once a day
TID - ter in die, three times a day
QID - quater in die, four times a day
PRN - pro re nata, as needed
QHS - quaque hora somni, every bedtime

See Also[edit | edit source]

BID Resources
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