A practical reference on AOD-9604: what it is, how it behaves, what the literature reports, and where the honest uncertainties sit.
This page was last updated on 2025-08-31 and is reviewed periodically as new material appears.
Research interest in AOD-9604 often focuses on whether it can influence lipid metabolism without the growth-promoting or glucose-related effects of full-length hGH. This question remains unresolved, and findings depend on model, dose, and measurement method. Some reviews treat the peptide as a historical obesity candidate rather than an active therapeutic. Others cite it in discussions of peptide fragments, metabolic signaling, and performance-enhancing substances. Clear conclusions are limited by the small number of rigorous, independent human studies.
AOD-9604 has been investigated primarily as a potential treatment for obesity and related metabolic conditions. Early laboratory work examined its effects on fat cells, and later studies moved into animal models and human clinical trials. Some trials reportedly reached Phase II, but the program did not lead to an approved medicine. Published summaries often note that weight-loss results were modest or inconsistent. The full trial data are not all publicly available in detail.
Regulatory treatment of AOD-9604 has varied. In sports anti-doping, the peptide became widely discussed during a 2013 investigation into an Australian professional sports club. Authorities at the time debated whether it fell under prohibitions on growth hormone and related substances. Later clarifications and updated lists have addressed the compound in different ways. Anyone seeking current status should consult the latest applicable rules, and commercial supply for human use is not authorized in major markets.
The peptide is frequently described as a growth hormone fragment, although it is chemically distinct from full-length hGH. AOD-9604 contains 16 amino acids and includes two cysteine residues that can form an intramolecular disulfide bond. In solution, this structural feature can influence folding, aggregation, and stability. Published descriptions sometimes call it hGH 176-191 or AOD9604, with spacing and capitalization varying. Such naming differences can complicate literature searches, database entries, and product verification.
Researchers have studied the fragment in cell and animal models to understand its metabolic actions. Some experiments report effects on fat breakdown and fat storage pathways, but the underlying mechanism remains incompletely defined. AOD-9604 does not appear to stimulate the same broad growth hormone receptor signaling as full-length hGH. Whether its observed activities arise from direct receptor interactions or downstream metabolic changes is an open question. Results from different assays are not always consistent.
| Property | Value | Notes |
|---|---|---|
| Primary research area | Obesity and metabolic regulation | Studied in cell, animal, and human models |
| Highest reported trial phase | Phase II | Public summaries describe mixed results |
| Common route in trials | Subcutaneous injection | Typical for peptide therapeutics |
| Regulatory example | 2013 Australian anti-doping review | Classification was debated at the time |
| Approval status | Not approved as a human medicine | Status can change by jurisdiction |
Commercial AOD-9604 may vary in purity, counterion content, and residual moisture. Certificates of analysis often report HPLC purity, mass confirmation, and appearance, but testing methods differ between suppliers. Independent verification is sometimes used because labeled content may not match actual peptide amount. Stability under different pH and temperature conditions is not fully standardized across studies. Researchers generally treat lyophilized material as the reference form for weighing and reconstitution. Moisture content can affect accurate mass measurement.
AOD-9604 is typically supplied as a lyophilized white to off-white powder. In this form, it is relatively stable when kept cool, dry, and protected from light. Common storage recommendations place it at −20 °C or below for long-term retention. Reconstituted solutions are less stable and are often kept at 2–8 °C for short periods. Freeze-thaw cycles should be minimized because they can promote aggregation or loss of peptide content. Vials are usually sealed under inert gas to reduce oxidation.
AOD-9604 drew attention in the 1990s and 2000s as a potential anti-obesity agent. Early work explored both injectable and oral routes, which is unusual for a peptide of this size. Animal studies reported changes in fat metabolism without the growth-promoting or insulin-like effects associated with full-length growth hormone. Subsequent human trials produced mixed or modest results, and the compound did not obtain regulatory approval for weight management in major markets. It remains known mainly through research literature, sports anti-doping listings, and non-approved supplement advertising.
AOD-9604 is prohibited in sport by the World Anti-Doping Agency under the peptide hormone class. Its presence in a sample can be detected through mass spectrometry-based methods, although the exact assay depends on the laboratory. In research settings, material is often supplied as a lyophilized powder for reconstitution. Buyers and researchers should note that products labeled AOD-9604 may vary in purity and actual peptide content. Analytical certificates and independent testing are common ways to verify identity, but no global harmonized standard exists for all commercial lots.
=== Krebs === Die Analyse von sechs großen Studien mit 549.944 Personen ergab, dass an Diabetes Erkrankte gegenüber Nichtdiabetikern ein erhöhtes Risiko haben, an Krebs zu erkranken oder zu sterben. Das Krebsrisiko steigt mit der Höhe der Blutzuckerwerte an, bei Männern um ca. 20 %, bei Frauen um ca. 30 %. Besonders häufig waren bei Männern die Leber, die Gallenblase und die Atemwege sowie Schilddrüse und Darm betroffen, bei Frauen die Bauchspeicheldrüse, die Harnblase, die Gebärmutter und der Magen. Grundsätzlich beziehen sich Aussagen zu einem erhöhten Krebsrisiko durch Diabetes auf Diabetes Typ 2, da beim Typ 1 die Datenlage weniger eindeutig ist.
=== Hörverlust === Studien zeigen einen Zusammenhang zwischen Diabetes mellitus (DM) und einer Schädigung des Innenohrs auf. Als Ursache für die Verringerung des Hörvermögens wird eine Schädigung der kleinen Blutgefäße (Mikroangiopathie) im Innenohr vermutet. Die Symptomatik eines leichten Hörverlusts kann bereits im ansonsten asymptomatischen Frühstadium des DM auftreten. Die Prognose bei einem Hörsturz ist bei DM-Patienten hinsichtlich einer vollständigen Wiederherstellung des Hörvermögens vermutlich aufgrund einer Mikroangiopathie des Innenohres schlecht, wobei nur die Faktoren Alter und postprandiale Blutzuckerwerte (postprandial: nach der Mahlzeit), aber nicht die aktuelle Stoffwechseleinstellung oder die Diabetesdauer relevant waren.
=== Osteoporose === Diabetes des Typs 1 ist darüber hinaus auch für ein erhöhtes Osteoporoserisiko verantwortlich. Durch die Diabeteserkrankung ist unter anderem die Entwicklung und Aktivität von Osteoblasten gestört, den Zellen, die für den Aufbau der Knochensubstanz verantwortlich sind. Dies führt zu einer Abnahme der Knochendichte und somit zu einem erhöhten Risiko für Knochenbrüche.
== Prognose == Eine deutliche Verbesserung der Prognose über die Senkung der Wahrscheinlichkeit von Folgekrankheiten (siehe oben) ist – belegt u. a. durch die DCCT-Studie für Typ-1-Diabetiker und die UKPDS-Studie für die Typ-2-Diabetiker – durch eine Senkung der Blutzucker- und HbA1c-Werte erreichbar. Jedoch ist beim Typ-2-Diabetes mellitus das optimale Ausmaß der Blutzuckersenkung umstritten. Personen, die ihren Lebensstil nicht entsprechend den Empfehlungen (siehe UKPDS-Studie, Steno-2-Studie) ändern, haben ein erhöhtes Risiko für Folgekrankheiten. Die Verzuckerung der Zellen (messbar anhand der nichtenzymatischen Glykierung der roten Blutkörperchen durch den HbA1c-Wert) geht bereits nach 2 Stunden erhöhten Blutzuckerwertes eine irreversible chemische Bindung mit den Zellmembranen ein (Amadori-Umlagerung), die nicht durch einen niedrigen Stoffwechsel kompensiert oder rückgängig gemacht, sondern höchstens aufgehalten werden kann, um Folgekrankheiten zu vermeiden. Oberstes Ziel der Diabetestherapie ist es daher, diese irreversible chemische Reaktion der Glukoseablagerungen zu minimieren (AGE-„RAGE“-Bildungsprozess). Für den betroffenen Diabetiker gilt deshalb, dass er selbst zum Spezialisten für seine Krankheit werden und Verantwortung übernehmen sollte. Er muss die Feinsteuerung und nach Möglichkeit auch die Basalratenfindung im Alltag selbst lösen, da nur er die genaue Reaktion seines Körpers durch die Rahmenbedingungen (Essen, Bewegung, Insulin, Krankheit, Sport …) kennt und einschätzen kann.
Sources: de.wikipedia.org
No major medicines regulator appears to have approved AOD-9604 for human therapeutic use. It has been studied in clinical trials, but those programs did not result in a marketed drug.
It became prominent during a 2013 Australian sports investigation that examined whether it was a prohibited growth-hormone-related substance. Subsequent interpretations and list updates have varied, so current rules should be checked directly.
Published summaries generally report limited or inconsistent weight-loss effects, and complete trial data are not widely available. The studies were not sufficient to establish it as an effective obesity treatment.
No, it is a synthetic peptide fragment corresponding to a small portion of hGH. It is not the full 191-amino-acid hormone and does not reproduce all of hGH's effects.