Tesamorelin is a synthetic analog of growth hormone releasing hormone (GHRH) and one of the most extensively studied compounds in its class. It consists of 44 amino acids with a trans-3-hexenoic acid modification designed to enhance stability and biological activity.
Regulatory Background
Tesamorelin has been the subject of extensive clinical and metabolic research, with published studies appearing in major medical journals examining its effects in body composition and lipodystrophy-related models.
The depth of published literature surrounding Tesamorelin has made it one of the more well-characterized compounds within the GHRH analog category.
Molecular formula: C221H366N72O67S1
Molecular weight: 5135.9 g/mol
Mechanism of Action
Tesamorelin binds to GHRH receptors located on pituitary somatotroph cells, stimulating the synthesis and secretion of growth hormone. Unlike growth hormone secretagogues that primarily trigger release of stored GH, Tesamorelin promotes ongoing GH production through receptor-mediated signaling.
This mechanism contributes to a more sustained elevation profile in growth hormone and downstream IGF-1 signaling compared to shorter-duration secretagogues.
Research Applications
Published research on Tesamorelin has focused heavily on visceral adipose tissue reduction and metabolic regulation. Experimental studies have examined its effects on trunk fat distribution, IGF-1 modulation, body composition, and age-related metabolic decline.
Additional research areas have included hepatic steatosis models, neurocognitive function, mitochondrial health, and sarcopenia-related body composition changes.
Clinical Literature
Tesamorelin benefits from a substantial body of published clinical literature including randomized controlled trials, long-term follow-up studies, and metabolic outcome research. This extensive research foundation has positioned it as a well-characterized compound for growth hormone axis and metabolic studies.
Handling and Storage
Tesamorelin is supplied as a lyophilized powder for research purposes. Store at -20°C prior to reconstitution. Once reconstituted with bacteriostatic water, refrigerate at 2–8°C and avoid repeated freeze-thaw cycles.
Purity and Testing
At White Label Research, Tesamorelin undergoes third-party HPLC and mass spectrometry testing to verify identity and purity. Certificates of analysis are available on the product page. Our standard threshold is ≥99% purity.