mcg
Millionth of gram
Mcg is an abbreviation for microgram, one millionth of a gram.
It appears primarily in pharmaceutical and nutritional contexts: 400 mcg of folic acid, the recommended daily allowance is 55 mcg.
The symbol μg is standard in scientific writing, but mcg prevails on medication labels and supplement bottles because μ (the Greek letter mu) can be misread.
Billionth of a gram
weight · unit · quantification · calibration · spectrometry · laboratory · analytical · precision
Measured medicine amount
- medicationTherapeutic substance for illness
- prescriptionMedical dispensing authorization
- supplementSomething added to complete
- vitaminEssential organic nutrient
dose · units · titration · injectable · oral · sublingual · intravenous · dispense
nanogram
Billionth of a gram
metric · weight · unit · quantification · calibration · spectrometry · laboratory · analytical · precision · accuracy
dosage
Measured medicine amount
- medicationTherapeutic substance for illness
- prescriptionMedical dispensing authorization
- supplementSomething added to complete
vitamin · dose · units · titration · injectable · oral · sublingual · intravenous · dispense · pharmacy