From what I have read 1000 iu is far to high.
This is from Dr John Crisler
"You also run the risk of inducing LH insensitivity at higher dosages, and therefore may actually cause primary hypogonadism while attempting to treat secondary hypogonadism. HCG, especially at higher doses (defined as >500IU per shot), also dramatically increases aromatase activity, thus inappropriately elevating estrogens. Progesterone—a feminizing hormone in adult males—also elevates at those dosages. Personally, I recommend giving no more than 100IU of HCG per day, as starting dose. And please give it some time to work."
This guy uses it in his practice daily he knows what he is talking about on this subject.