pharmacist
part of me is saying "golden, its a dry powder, so chances are all you have to deal with is drug degradation into an inactive form, so its probably alright" but then the other part of me is saying "2 years is pretty significant, and if there is some sort fo bioactive product of degradation, it could wreak havoc on this guys hormone cascade" and then i think "golden, tis not the most expensive drug anyway, tell teh guy to get some fresh stuff ffs before something bad happens"
so there you go.