B.i.d. (on prescription) - Medical Meaning

B.i.d. (on prescription)

b.i.d. (on prescription): Seen on a prescription, b.i.d. means twice (two times) a day. It is an abbreviation for bis in die which in Latin means twice a day. The abbreviation b.i.d. is sometimes written without a period either in lower-case letters as bid or in capital letters as BID. However it is written, it is one of a number of hallowed abbreviations of Latin terms that have been traditionally used in prescriptions to specify the frequency with which medicines should be taken. Other examples include:

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