A 191-amino acid peptide hormone secreted by the anterior pituitary gland that regulates growth, body composition, metabolism, and tissue repair.
Growth hormone (GH), also known as somatotropin, is a 191-amino acid single-chain polypeptide synthesised and secreted by somatotroph cells in the anterior pituitary gland. GH secretion follows a pulsatile pattern regulated by the opposing actions of GHRH (stimulatory) and somatostatin (inhibitory), with the largest pulses occurring during deep slow-wave sleep. GH acts both directly and indirectly via insulin-like growth factor 1 (IGF-1), which is produced primarily in the liver in response to GH stimulation. Its physiological effects include stimulating linear bone growth, promoting lean body mass accretion, enhancing lipolysis (fat breakdown), supporting immune function, and facilitating tissue repair and regeneration. GH levels decline progressively with age (somatopause), driving research interest in GH secretagogue peptides like CJC-1295 and Ipamorelin that stimulate endogenous GH release through natural pituitary pathways.
A synthetic 29-amino acid analogue of growth hormone-releasing hormone (GHRH) that stimulates sustained growth hormone elevation from the pituitary gland.
A selective pentapeptide growth hormone secretagogue that stimulates GH release via the ghrelin receptor with minimal effects on cortisol and prolactin.
Growth Hormone-Releasing Hormone, a 44-amino acid peptide produced in the hypothalamus that stimulates growth hormone synthesis and secretion from the pituitary.
A pea-sized endocrine gland at the base of the brain that produces growth hormone, ACTH, TSH, and other hormones regulating crucial body functions.
The fundamental building blocks of peptides and proteins, with 20 standard types that combine in unique sequences to create biologically active molecules.
Body Protection Compound-157, a synthetic 15-amino acid peptide derived from human gastric juice with potent tissue-healing and neuroprotective properties.
Legal under MHRA rules. BPC-157, tirzepatide & NAD+ pens with next-day UK delivery from £99. >99% purity, GMP certified. Shop now.
ARTICLEPens cut dosing error from 15% to under 2%. We compare accuracy, contamination risk, cost, and convenience. See why researchers are switching in 2026.
ARTICLEOver 100 published studies back BPC-157 for tissue repair, gut healing, and neuroprotection. Mechanisms, dosing protocols, and where to buy in the UK.
COMPARISONCompare BPC-157 and TB-500 for recovery research. Mechanisms, benefits, dosing, and when to use each peptide. Buy both as pre-mixed pens UK.
COMPARISONCompare tirzepatide and semaglutide for metabolic research. Dual vs single receptor, efficacy data, side effects, and pricing. Buy tirzepatide pens UK.
ENCYCLOPEDIAGastric Pentadecapeptide. Molecular weight: 1419.53 Da. Explore mechanism of action, key studies, and research applications.
BUNDLEThe most studied peptide duo in tissue regeneration research
PROTOCOLResearch protocol combining BPC-157 and TB-500 peptide pens for accelerated tissue recovery. Explore synergistic healing mechanisms, dosing schedules, and published study findings.
FAQEverything you need to know about peptide pen systems. Learn how pre-mixed peptide pens work, their advantages over vials, dosing mechanisms, and more.
CATEGORYResearch-grade recovery peptide pens. BPC-157 and TB-500 for tissue repair, wound healing, and inflammation research. >99% purity, UK delivery.
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