Characteristics
| Molecular Formula | C221H366N72O67S |
| CAS Number | 218949-48-5 |
| Molar Mass | 5135.9 g/mol |
| Amino Acid Sequence | Tyr-Ala-Asp-Ala-Ile-Phe-Thr-Asn-Ser-Tyr-Arg-Lys-Val-Leu-Gly-Gln-Leu-Ser-Ala-Arg-Lys-Leu-Leu-Gln-Asp-Ile-Met-Ser-Arg-Gln-Gln-Gly-Glu-Ser-Asn-Gln-Glu-Arg-Gly-Ala-Arg-Ala-Arg-Leu-NH2 |
| Synonyms | TH9507, Egrifta, Lipodystrophy Drug |
| Solubility | Water-soluble |
| Organoleptic Profile | White to off-white powder |
| Composition | Lyophilized powder - requires reconstitution |
How does Tesamorelin work?
Tesamorelin is a synthetic growth hormone-releasing hormone (GHRH) analog that has been the subject of extensive research in the field of endocrinology and metabolism. This peptide's primary mechanism of action involves binding to and activating the growth hormone-releasing hormone receptor (GHRHR) in the anterior pituitary gland. This activation stimulates the synthesis and pulsatile release of endogenous growth hormone (GH), which in turn promotes the production of insulin-like growth factor-1 (IGF-1) in the liver and other tissues.
Benefits
- Visceral Adipose Tissue (VAT) Reduction: Clinical studies have shown that tesamorelin can significantly reduce VAT in individuals with HIV-associated lipodystrophy and in obese individuals without HIV. This reduction in VAT has been associated with improvements in metabolic health markers.
- Insulin Sensitivity: Investigations have indicated that tesamorelin treatment may improve insulin sensitivity in certain populations, including individuals with HIV-associated lipodystrophy and obese individuals without HIV.
- Cognitive Function: Some studies have explored tesamorelin's potential effects on cognitive function in older adults with mild cognitive impairment (MCI). Preliminary findings suggest possible improvements in executive function, attention, and memory.
- Muscle Mass and Strength: Research has indicated that tesamorelin may increase muscle mass and strength in older adults and individuals with HIV-associated lipodystrophy.
- Bone Health: Studies have observed increases in bone mineral density (BMD) in individuals with HIV-associated lipodystrophy following tesamorelin treatment.
Side Effects
Based on the available preclinical data, the most common side effects associated with Tesamorelin treatment include:
- Injection site reactions
- Edema
- Arthralgia
- Hypersensitivity reactions
Note: The safety profile of Tesamorelin has not been fully established, and further clinical studies are needed to fully evaluate the potential for side effects and long-term safety of Tesamorelin in mammals.
Summary
Tesamorelin is a potent growth hormone-releasing hormone (GHRH) analog that has been extensively researched for its potential to improve metabolic health, reduce visceral adipose tissue (VAT), and enhance cognitive function in various populations. By stimulating the production and release of endogenous growth hormone (GH) from the anterior pituitary gland, tesamorelin promotes the production of insulin-like growth factor-1 (IGF-1), leading to numerous metabolic and cognitive benefits. Studies have demonstrated that tesamorelin significantly reduces VAT, improves insulin sensitivity, enhances cognitive function, increases muscle mass and strength, and promotes bone health in individuals with HIV-associated lipodystrophy, obesity, and age-related cognitive decline. As a research peptide, tesamorelin holds promise for further investigating the complex interplay between growth hormone, metabolism, and cognitive function, potentially leading to the development of novel therapeutic strategies for various metabolic and cognitive disorders.
References
- LiverTox: Clinical and Research Information on Drug-Induced Liver Injury. Bethesda (MD): National Institute of Diabetes and Digestive and Kidney Diseases; 2012.
- Dhillon S. Tesamorelin: a review of its use in the management of HIV-associated lipodystrophy. Drugs. 2011.
- Fourman LT, et al. Effects of tesamorelin on hepatic transcriptomic signatures in HIV-associated NAFLD. JCI Insight. 2020.
- Spooner LM, Olin JL. Tesamorelin: a growth hormone-releasing factor analogue for HIV-associated lipodystrophy. Ann Pharmacother. 2012.
- Clinical Review Report: Tesamorelin (Egrifta). Ottawa (ON): Canadian Agency for Drugs and Technologies in Health; 2016.
- Lake JE, et al. Tesamorelin improves fat quality independent of changes in fat quantity. AIDS. 2021.
- Pharmacoeconomic Review Report: Tesamorelin (Egrifta). Ottawa (ON): Canadian Agency for Drugs and Technologies in Health; 2016.
- Grunfeld C, Dritselis A, Kirkpatrick P. Tesamorelin. Nat Rev Drug Discov. 2011.
- Wang Y, Tomlinson B. Tesamorelin, a human growth hormone releasing factor analogue. Expert Opin Investig Drugs. 2009.
- Tomlinson B. Drug evaluation: tesamorelin, a synthetic human growth hormone releasing factor. Curr Opin Investig Drugs. 2006.
Certificate of Analysis (COA)

Click to enlarge
Resource
All products on this site are for research and development use only. Products are not for human consumption of any kind. The statements made on this website have not been evaluated by the US Food and Drug Administration. Neither the products described nor the company are intended to diagnose, treat, cure, or prevent any disease.
Research Peptides Supported by Verifiable Testing
Ultimate Peptides™ is more than just a U.S. supplier of research peptides. We are helping to power the next wave of peptide research, dedicated to providing peptides that support our clients' work.
Consistent Quality Standards
Our internal processes and meticulous sourcing of premium materials help every peptide we offer meet rigorous internal quality standards.
Independently Verified
Every product undergoes extensive testing, both in-house and through independent, third-party laboratories.
Fast Shipping & Support
We provide fast and reliable shipping, using established couriers and high-quality packaging materials to help ensure that your peptides arrive promptly and in optimal condition.