Traditionally they have been used as teas or alcohol based tinctures or just consumed, but obviously nobody historically knew what the mg dosage was
and there was no equipment to test
the potency
of the particular crop. Therefore dosing is traditionally done by the number of times you take it in a day, not a mg dosage. My guess is you took a standardized extract in pill form, though I don't know this for sure, which isn't a natural way of taking an herb but is a modern way.