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The main discussion of these abbreviations in the context of drug prescriptions and other medical prescriptions is at List of abbreviations used in medical prescriptions. Some of these abbreviations are best not used, as marked and explained here.
This is a list of abbreviations used in medical prescriptions, including hospital orders (the patient-directed part of which is referred to as sig codes).This list does not include abbreviations for pharmaceuticals or drug name suffixes such as CD, CR, ER, XT (See Time release technology § List of abbreviations for those).
Latin was once the universal academic language in Europe. From the 18th century, authors started using their mother tongues to write books, papers or proceedings. Even when Latin fell out of use, many Latin abbreviations continued to be used due to their precise simplicity and Latin's status as a learned language. [citation needed]
Abbreviation Meaning ā (a with a bar over it) before (from Latin ante) before: A: assessment a.a. of each (from Latin ana ana) amino acids: A or Ala – alanine; C or Cys – cysteine; D or Asp – aspartic acid; E or Glu – glutamic acid; F or Phe – phenylalanine; H or His – histidine; I or Ile – isoleucine; K or Lys – lysine; L or ...
Historically, it was a physician's instruction to an apothecary listing the materials to be compounded into a treatment—the symbol ℞ (a capital letter R, crossed to indicate abbreviation) comes from the first word of a medieval prescription, Latin recipe (lit. ' take thou '), that gave the list of the materials to be compounded.
L. List of medical abbreviations: Latin abbreviations; List of medical abbreviations: D; List of medical abbreviations: E; List of medical abbreviations: F
Pronunciation follows convention outside the medical field, in which acronyms are generally pronounced as if they were a word (JAMA, SIDS), initialisms are generally pronounced as individual letters (DNA, SSRI), and abbreviations generally use the expansion (soln. = "solution", sup. = "superior").
Abbreviation Meaning q: each, every (from Latin quaque) q15: every 15 minutes q6h q6° once every 6 hours q2wk: once every 2 weeks qAc Before every meal (from Latin quaque ante cibum) q.a.d. every other day (from Latin quaque altera die) QALY: quality-adjusted life year: q.AM: every day before noon (from Latin quaque die ante meridiem) q.d.