Sure.
But how many users tend to dose using a "she'll be right, mate" attitude?
Going by what I read at various forums, people appear to have varying ideas of where to draw the dosing line; ie some at label recommendations, some at various points beyond that, etc. And then these points vary depending on the particular supplement.
I mean, just as a point of interest what might you deem "excessive dosing", De_eB? Any amount larger than label directions, or any amount beyond safety quantities (assuming the latter exist)?