depends when ,,
summer time...2 weeks i give it
winter can be up to a month
there is no need to worry with a great source though ,, like with nordic never a worry and trust me i had elfs trying his stuff for years over years and never report of bad quality ,,
ofcourse best thing is to get the gh straight home from pharma ,,but this is in a perfect world,,in any case what 2 iu wont do 4 will lol as logn as its legit gh dosed right
gh15 approved