I have mentioned this before in another post, you could try Ovidrel (rCG). It does not lose any potency for 12 months. I have been using it for 3 months now for the second time with a higher dose and appears to be working well for me. Previously, I tried it a number of years ago with a lower dose and the effect was not so noticeable. My current dose is approximately equivalent to 325iu of hCG, twice a week.
Nelson may be correct in that some males may need more. I was always very conservative with hCG owing to Dr. Crislers comments about it: "500iu was a big dose of hCG, never exceed this in a single dose".
However, some of us may need something closer to this!