So I reconstituted some Melanotan II at the begining of may. Now for various reasons I have been unable to use it and had to come off it, but now I'm using that same reconstituted vial that been in the fridge for over 6 months now and it still works! Its a little bit less potent, but it still works! I am pretty amazed at this, because I thought it was useless after 60 days!?