HCG (Human chorionic gonadotropin) is a treatment that can be used for increasing low testosterone in men as well as many other reasons.

HCG is an acronym for Human chorionic gonadotropin.

The FDA had approved HCG for the treatment of hypogonadism (underproduction of testosterone) and as a fertility drug used to aid in inducing ovulation in women.

While HCG offers the female no performance enhancing ability, it does prove very useful to the male user. The obvious use is to stimulate the production of testosterone in the body. The activity of HCG in the male body is due to its ability to mimic LH (luteinizing hormone). LH is a pituitary hormone that stimulates the Leydig's cells in the testicles to manufacture testosterone.

The main focus with HCG is to restore the normal ability of the testes to respond to endogenous luteinizing hormone. After long periods of inactivity (such as testosterone supplementation), this ability may have been seriously reduced.

In such a state testosterone levels may not reach a normal point, even though the release of endogenous LH has been resumed. It is often some time before normal testicle size and feelings of virility are restored. The excessive stimulation brought forth by administration of HCG can likewise cause the testicles to rapidly return to their normal size and level of activity.

When stimulated by HCG, the ability of the testes to aromatize androgens could potentially be heightened several times greater than normal. This also may inhibit testosterone production, so we therefore use HCG only as a quick shock to the testes.

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