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Product Description
It is a peptide hormone that stimulates growth, cell reproduction, and cell regeneration in humans and other animals. It is thus important in human development. It is a type of mitogen which is specific only to certain kinds of cells. This is a 191-amino acid, single-chain polypeptide that is synthesized, stored and secreted by somatotropic cells within the lateral wings of the anterior pituitary gland.

The largest and most predictable of these peaks occurs about an hour after onset of sleep with plasma levels of 13 to 72 ng/mL. Otherwise there is wide variation between days and individuals. Nearly fifty percent of  secretion occurs during the third and fourth NREM sleep stages. Surges of secretion during the day occur at 3- to 5-hour intervals. The plasma concentration of it during these peaks may range from 5 to even 45 ng/mL.  Between the peaks, basal levels are low, usually less than 5 ng/mL for most of the day and night. Additional analysis of the pulsatile profile of it described in all cases less than 1 ng/ml for basal levels while maximum peaks were situated around 10-20 ng/mL.

Physiological effect

1. Promotes growth,regulates bone metabolism
2. Regulates substance metabolism
3. Promotes tissue growth
4. Promotes protein synthesis
5. Good for fat-burning
6. Reduces the use of glucose
7. Promotion water and mineral metabolism
8. Anti-aging, brain functional promotion, increasing myocardial and immune functions.