mg.
Milligram with terminal period
What mg. stands for
mg. is a medical abbreviation for milligram with terminal period - written out in full as “Milligram with unnecessary period”. TermDecode files it under measurement abbreviations.
Risk
ISMP lists periods after abbreviations as error-prone: the terminal period after mg may be mistaken as the number 1.
Safer Alternative
Write "mg" without a terminal period
Seen in context
5 mg. misread as 5 mg1
Sources
The risk description and safer alternative above are reproduced from these published lists.
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