I have a novel idea 
Why not just follow the label directions.
Who cares. It was "free" right 
Since you are a smart person, im gonna explain you how did i get it free, just for you.
I went to shanghai in september, bought some chinese art stuff for my friends who's a collector, and now that he went to usa and couldnt find what i wanted (vitargo), he just bought what the people @ gnc miami told him to buy and gave it to me for free, in exchange for what the things i got for him in china.
It's called frienship, and even though i have money (not any getbig punk is going to buy 20+ containers/year from china right?) and i actually couldnt care less spending 40 or 80 bucks, it's not the idea to waste, in this case, a gift (which i got fully free

).
Hope that clears everything and have a nice day.
To those who kindly answered my questions, i appreciate it.