Yeah...I have heard of some celebrities using it. Supposed to help keep them young looking.
I found this info. on Web MD:
Similar claims of more energy and muscle strength and less body fat are also made for human growth hormone (hGH) supplements. This hormone is made naturally by the pituitary gland. Children need hGH to grow normally. It also helps keep our tissues and organs healthy. Our bodies make less hGH as we age.
The only approved use for hGH is a shot given to children whose bodies do not make enough growth hormone. Only doctors may prescribe and give hGH shots. Despite this, some people spend thousands of dollars a year on these shots because they hope to slow down their bodies' aging. Others, who cannot afford the injections, buy over-the-counter "hGH releasers." Claims that these releasers will make the body "release" more hGH are unproven.
What scientists do know is that in recent studies injections of growth hormone for a short time seemed to boost the size and strength of muscles and to lessen body fat in a small group of older men and women. Adding testosterone increased these benefits in men. Using estrogen did not bring about further muscle and body fat changes in women. Longer studies with larger numbers of older people are needed to find out if hGH can prevent weakness and frailty in older people without causing dangerous side effects.
What harm might using hGH for longer periods of time do? Some experts believe that such hGH treatment can lead to diabetes, the collection of fluid in body tissues, and carpal tunnel syndrome. Some of these side effects may be very serious in older adults. If the body makes too much growth hormone during adulthood, certain tissues, such as bones, may grow more than they are supposed to. This condition is called acromegaly. Scientists do not know if too much supplementation with growth hormone in adults could cause a similar problem.