What is the medical abbreviation for 5 x daily?

The medical abbreviation for 5 times daily is "5x/d" or "5 times a day." However, it's more common to see "5 times a day" written out to avoid confusion. In some contexts, "QID" (quater in die) might be used, but it specifically means four times a day. Always clarify with a healthcare professional if unsure about abbreviations.