What is the shelf life of unconstituted hcg? I found a good deal about a year ago on some 5,000 iu vials,so I bought 10 and was wondering if they were still good. They are still under vacuum I put bac water in one last week. However, the boys just don't seem to be fully reinflated. I'm using 500 iu on day 5 and 6 after injection of 400 mg test c and 300mg deca. Should I up the hcg dose and see if that helps or buy more hcg?