AOD9604 comes up often in conversation and rarely with the context attached. Here we lay out the basics in order, then work through the practical considerations.
Last reviewed on 2026-07-13. Where a claim depends on a specific study, the study is described rather than over-claimed.
Clinical development of AOD9604 included trials in people with obesity, but the results did not lead to approval as a prescription medicine in major markets. Interest later shifted to research settings and to unapproved products marketed for body composition. Regulatory agencies have questioned whether the peptide qualifies as a dietary ingredient, and some have issued warnings about its presence in supplements. Long-term human safety data are limited, and questions about efficacy, dosing, and target populations remain unresolved.
AOD9604 is a synthetic peptide modeled on the C-terminal region of human growth hormone. It corresponds to a short sequence near the end of the 191-amino-acid hormone, often described as residues 176–191 or a related fragment. Researchers designed it to separate metabolic effects from the growth-promoting actions of full-length growth hormone. Early work in the 1990s explored it as a candidate for weight and lipid disorders. It is not a naturally circulating hormone fragment produced in large amounts.
Laboratory studies have reported that AOD9604 can increase lipolysis and reduce lipid accumulation in fat cells. The precise molecular target remains uncertain, and the compound does not appear to activate the growth hormone receptor in the same way as full-length hGH. Proposed mechanisms include effects on beta-adrenergic signaling and enzymes involved in fatty acid synthesis, but these pathways are not firmly established. Because most evidence comes from cell and animal models, whether the same effects occur in humans is an open question.
Stability of AOD-9604 depends on storage conditions. Lyophilized powder is generally more stable than reconstituted solution. Recommended storage is typically at -20°C or lower, protected from light and moisture. Repeated freeze-thaw cycles can cause aggregation or degradation. In solution, the peptide may be susceptible to hydrolysis or oxidation, so aliquoting and cold storage are common practices. Researchers often add stabilizers such as mannitol or trehalose during lyophilization to improve shelf life.
Quality control for AOD-9604 involves verifying identity, purity, and concentration. Suppliers may provide a certificate of analysis listing HPLC purity and mass spectrometry data. Independent verification is advised because peptide products can vary in quality. Researchers should check for counterions, residual solvents, and microbial contamination. Proper documentation supports reproducibility and safety in laboratory studies. When sourcing, institutions often require third-party testing and detailed chain-of-custody records. These steps help ensure that experimental results are attributable to the peptide rather than impurities.
| Property | Value | Notes |
|---|---|---|
| Molecular class | Synthetic peptide | Derived from C-terminal region of human growth hormone |
| Approximate molecular mass | About 1.8 kDa | Varies with sequence length and counterions |
| Confirmed receptor target | None established | No confirmed growth hormone receptor agonism |
| Reported in vitro activity | Lipolysis stimulation and lipogenesis inhibition | Observed mainly in adipocyte models; human relevance uncertain |
| Regulatory status | Not approved as a drug in major markets | May be treated differently across jurisdictions; not a recognized dietary ingredient in some countries |
AOD-9604 has been investigated mainly in the context of body fat and metabolic endpoints. Some early animal and small human studies reported changes in fat mass or lipid markers, but findings were not uniform. Larger, well-controlled trials that would establish efficacy are lacking in the public literature. As a result, claims about weight loss or metabolic benefit remain investigational rather than established. The distinction between a research finding and a proven clinical outcome is central to discussing this peptide.
Regulatory bodies have taken different approaches to AOD-9604. It is not approved as a prescription medicine by major agencies such as the U.S. Food and Drug Administration or the European Medicines Agency. In sport, the World Anti-Doping Agency prohibits peptide hormones, growth factors, and related substances, and AOD-9604 has been treated as a prohibited substance. These regulatory decisions reflect concerns about safety, efficacy, and potential misuse rather than proof of benefit.
Clinical development of AOD-9604 included trials in people with obesity. Reports from early-phase and mid-phase studies described modest or inconsistent changes in body weight. A phase IIb program did not meet its primary endpoint, and the compound was not approved for medical use. Differences in formulation, delivery route, and participant characteristics may explain some of the variation. Later investigations explored whether the peptide might have effects in other tissues, including cartilage.
Regulatory treatment of AOD-9604 is shaped by its classification as a peptide hormone. The World Anti-Doping Agency lists it as a prohibited substance, and many national anti-doping organizations adopt that list. It does not hold approval as a prescription medicine in the United States, the European Union, or other major markets. Products sold online are frequently labeled for research use only and may not undergo independent quality testing. Import and possession rules differ by country, so legal status depends on local law.
Proposed mechanisms for AOD-9604 focus on fat cells. Laboratory studies suggest the peptide can increase lipolysis, the breakdown of stored fat, and reduce lipogenesis, the formation of new fat. Unlike full human growth hormone, it does not appear to stimulate substantial IGF-1 production in the studies reported so far. Some evidence points to beta-adrenergic signaling, but the precise receptor targets and downstream pathways remain unresolved. The fragment is not thought to act through the classical growth hormone receptor.
== Taxonomy == Christian Hendrik Persoon first circumscribed the genus Russula in his 1796 work Observationes Mycologicae, and considered the defining characteristics to be the fleshy fruit bodies, depressed cap, and equal gills. He reduced it to the rank of tribe in the genus Agaricus in 1801. Elias Fries similarly regarded Russula as a tribe of Agaricus in his influential Systema Mycologicum (1821), but later (1825) raised it to the rank of genus in the Systema Orbis Vegetabilis. Around the same time, Samuel Frederick Gray also recognized Russula as a genus in his 1821 work The Natural Arrangement of British Plants. The name Russula is derived from the Latin word russus, meaning "red".
== Side effects == Degarelix is commonly associated with hormonal side effects such as hot flashes and weight gain. Due to its mode of administration (subcutaneous injection), degarelix is also associated with injection-site reactions such as injection-site pain, erythema or swelling. Injection-site reactions are usually mild or moderate in intensity and occur predominantly after the first dose, decreasing in frequency thereafter. Less common: Anemia. Diarrhea, nausea. Hyperhidrosis including night sweats, rash. Gynecomastia, testicular atrophy, erectile dysfunction. Increased transaminases. Musculoskeletal pain and discomfort. Dizziness, headache. Insomnia. Weight gain. Chills, fever, fatigue, flu-like illness.
== Trivia == Guests on the album include 2006 UK DMC Champion: DJ Muzzel, legendary Jazz trumpeter Jay Phelps, composer/cellist Nicholas Singer, amongst others. Directors for the album's videos include Ebba Erikzon, Mina Song, Everton Sebben, and Mark Maclaine.
== Treatment == There are no pharmaceuticals approved specifically for treating HHV-6 infection, although the usage of Cytomegalovirus treatments (valganciclovir, ganciclovir, cidofovir, and foscarnet) have shown some success. These drugs are given with the intent of inhibiting proper DNA polymerization by competing with deoxy triphosphate nucleotides or specifically inactivating viral DNA polymerases. Finding a treatment can be difficult when HHV-6 reactivation occurs following transplant surgery because transplant medications include immunosuppressants.
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The Keewatin Region was a district of the Northwest Territories, in use as an administrative and statistical division until the creation of Nunavut in 1999. The majority of Keewatin Region fell on the Nunavut side of the boundary and was reconstituted as Kivalliq Region within the new territory, while a strip on the region's west side remaining in the NWT was transferred to Fort Smith Region. Kivalliq continues to be referred to as "Keewatin Region, Nunavut" in some circumstances, such as by Statistics Canada. The regional seat of the Keewatin Region was Rankin Inlet.
oxidative stress nitrosative stress preventing irreversible oxidation of protein thiols control of cell-signalling pathways by modulating protein function Protein S-glutathionylation, which is reversible, entails formation of a mixed disulfide. It is one of a host of reactions of the cysteine residues.
In molecular biology, Proteinase K (EC 3.4.21.64, protease K, endopeptidase K, Tritirachium alkaline proteinase, Tritirachium album serine proteinase, Tritirachium album proteinase K) is a broad-spectrum serine protease. The enzyme was discovered in 1974 in extracts of the fungus Parengyodontium album (formerly Engyodontium album or Tritirachium album). Proteinase K is able to digest hair (keratin), hence, the name "Proteinase K". The predominant site of cleavage is the peptide bond adjacent to the carboxyl group of aliphatic and aromatic amino acids with blocked alpha amino groups. It is commonly used for its broad specificity. This enzyme belongs to Peptidase family S8 (subtilisin). The molecular weight of Proteinase K is 28,900 daltons (28.9 kDa).
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Furthermore, a narrow wound, less than 1 mm wide can be allowed to heal by secondary intention (autonomous re-epithelialisation). III. Paramedian forehead flap The paramedian forehead flap is the premier autologous skin graft for the reconstruction of a nose, by replacing any of the aesthetic nasal subunits, especially regarding the problems of different tissue thickness and skin color. The forehead flap is an axial skin flap based upon the supraorbital artery (an ophthalmic artery branch) and the supratrochlear artery (an ophthalmic artery terminus), which can be thinned to the subdermal plexus in order to enhance the functional and aesthetic outcome of the nose. Restricted length is a practical application limit of the paramedian forehead flap, especially when the patient has a low frontal hairline. In such a patient, a small portion of scalp skin can be included to the flap, but it does have a different skin texture and does continue growing hair; such mismatching is avoided with the transverse emplacement of the flap along the hairline; yet that portion of the skin flap is random, and so risks a greater incidence of necrosis. The paramedian forehead flap has two disadvantages, one operational and one aesthetic: Operationally, the reconstruction of a nose with a paramedian forehead flap is a two-stage surgical procedure, which might a problem for the patient whose health (surgical suitability) includes significant, secondary medical risks. Nonetheless, the second stage of the nasal reconstruction can be performed with the patient under local anaesthesia.
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Sources: en.wikipedia.org
AOD9604 is a synthetic peptide based on a C-terminal segment of human growth hormone. It is manufactured by chemical peptide synthesis rather than extracted from human tissue. The sequence is often described as hGH fragment 176–191 or a close variant.
It is not approved as a prescription drug in the United States or the European Union for any indication. Regulatory status can differ by country, and it is often sold as a research chemical or in unapproved products. Such products are not equivalent to an approved medicine.
In the studies reported so far, AOD9604 does not appear to act through the growth hormone receptor and has not shown the typical IGF-1 increase caused by full-length hGH. Human data are limited, so this remains an area of uncertainty. It should not be assumed to have the same effects as hGH.
Reversed-phase HPLC is used to assess purity, and mass spectrometry confirms molecular mass. Amino acid analysis can verify composition. These methods are standard for peptide characterization.