Without any medical condition in which hgh therapy is essential, you can't use it by your own for other purposes like weight loss or as an anti ageing drug. Some athletes use hgh injections for weight loss. Usually 2-4 IUs of hgh is used every day for this purpose. However to prevent some complications, the dose is divided and upto 2 IUs is taken at a time. Hgh injections for weight loss are not safe and an overdose may result into several deformities.