Peptide Medicine
AOD-9604: What the Research Actually Shows
Medically reviewed by HealthRX.com Medical Team · Last reviewed
What is AOD-9604?
AOD-9604 is a synthetic fragment made from the last part of the human growth hormone molecule, the 176-191 region. It was developed by Metabolic Pharmaceuticals to mimic growth hormone's fat-burning action without its effects on growth or blood sugar.
How is AOD-9604 supposed to work?
AOD-9604 is designed to copy the part of growth hormone that breaks down fat, in theory increasing fat burning and reducing fat storage without raising IGF-1 or blood sugar. This is the proposed mechanism, but whether it produces meaningful fat loss in people is the key question.
What does the research show?
Early animal studies looked promising, but human phase 2 trials in obesity did not show significant weight loss compared with placebo, and the obesity program was discontinued. AOD-9604 has since been explored for other uses such as osteoarthritis. The central fat-loss claim is not supported by its own human trials.
- Animal studies suggested fat-burning effects.
- Human phase 2 obesity trials did not beat placebo for weight loss, and development for obesity stopped. [1]
- Later research explored osteoarthritis and cartilage repair.
- Honest framing: the popular fat-loss marketing is not backed by the human trial results.
How is AOD-9604 used and dosed?
AOD-9604 is used as a subcutaneous injection, with marketed doses commonly around 300 micrograms per day, though this reflects market practice rather than a proven effective dose. Any use should be directed by a licensed provider, with realistic expectations given the weak efficacy evidence.
Is AOD-9604 safe?
In trials AOD-9604 was generally well tolerated and, unlike growth hormone, did not appear to affect IGF-1 levels or blood sugar. Long-term safety data is limited. As with all peptides obtained outside approved channels, product purity and sterility are real concerns.
Is AOD-9604 legal and FDA approved?
AOD-9604 is not an FDA-approved drug. It has appeared in some markets as a supplement or food ingredient, and injectable forms are compounded on a prescription. It is also banned in competitive sport. Use should be medically supervised.
How does AOD-9604 compare with other peptides?
| AOD-9604 | Semaglutide | Tirzepatide | |
|---|---|---|---|
| Human weight-loss evidence | Did not beat placebo in trials | Strong (large trials) | Strong (large trials) |
| FDA approved for weight | No | Yes (as Wegovy) | Yes (as Zepbound) |
| Route | Injection | Injection | Injection |
Frequently asked questions
Does AOD-9604 work for weight loss?
The company's own human obesity trials did not show significant weight loss compared with placebo, so the evidence for fat loss is weak despite the marketing.
Is AOD-9604 FDA approved?
No. AOD-9604 is not an FDA-approved drug. Injectable forms are compounded on prescription.
Is AOD-9604 safe?
It was generally well tolerated in trials and did not appear to affect IGF-1 or blood sugar, but long-term safety data is limited.
How is AOD-9604 different from GLP-1 medications?
GLP-1 medications such as semaglutide and tirzepatide have strong trial evidence and FDA approval for weight loss, while AOD-9604 did not beat placebo in its trials.
Citations
This guide is educational and is not a substitute for individualized medical advice. AOD-9604 is prescription-only and requires evaluation by a licensed provider.