What does the abbreviation OD signify when prescribing medication?

The abbreviation OD stands for "once a day" in medical terminology when prescribing medication. This indicates that a medication should be taken one time in a 24-hour period. It's important for healthcare providers to communicate the frequency of medication administration clearly to ensure patients understand how to take their medications correctly. Accurate dosing is crucial for effectiveness and safety in pharmacotherapy. Understanding this abbreviation helps prevent potential misunderstandings that could lead to underdosing or overdosing a medication.