What's the difference

[Alex]

I'm probably being thick here    but I  don't understand the difference between mcg and μg this is in relation to vitamin dosage. I take B12 which shows 500 μg on the tub, but on line any info about vitamin B12 gives dosage in mcg.  Can you help me out folks  ?

[Michael Rolls]

they are the same - one millionth of a gram. The funny Greek symbol is the international symbol, but mcg is more normally used in the UK and USA.
Mike

[Alex]

Thanks Mike, you learn something every day on here !!!

[Michael Rolls]

you are very welcome