What is AOD-9604?

AOD-9604 is a synthetic fragment of the C-terminal end of human growth hormone — specifically the amino acids at positions 176–191 of the HGH molecule. This region of HGH is responsible for the hormone’s fat-burning (lipolytic) effects, while the rest of the molecule controls growth and insulin-like effects.

By isolating and stabilizing just this fragment, AOD-9604 delivers the fat-loss benefits of HGH without raising IGF-1 levels, stimulating growth, or affecting blood glucose — making it a far safer option than full HGH for targeted fat reduction. It was originally developed by Monash University in Australia as an obesity treatment and reached Phase 2/3 clinical trials before development was paused.

Key advantage: Unlike Semaglutide or full HGH, AOD-9604 directly targets fat tissue without affecting appetite hormones or insulin sensitivity. It is a purely metabolic peptide — making it a popular add-on to other weight management protocols.

Key benefits of AOD-9604

Here is what the research and clinical experience suggest AOD-9604 can do:

Targeted fat burning

Activates lipolysis in fat cells — especially stubborn visceral and subcutaneous fat — without muscle loss.

No blood sugar impact

Does not raise IGF-1 or affect insulin sensitivity, making it safer than full HGH for metabolically sensitive patients.

Inhibits fat formation

Blocks lipogenesis — the conversion of carbohydrates into fat storage — adding a second metabolic mechanism.

Cartilage and joint repair

Emerging research suggests AOD-9604 may support cartilage regeneration, similar to some effects of full HGH.

Stackable with other peptides

Complements Semaglutide, Tesamorelin, or other weight management protocols without interference.

Safe long-term profile

Does not suppress the pituitary or interfere with natural GH production.

How does AOD-9604 work?

Lipolysis activation

AOD-9604 binds to the beta-3 adrenergic receptor in fat cells, triggering the same lipolytic (fat-breaking) pathway activated by the fat-burning region of natural HGH. This releases stored triglycerides from fat cells into the bloodstream where they can be used for energy.

Lipogenesis inhibition

AOD-9604 also blocks lipogenic enzymes that convert dietary carbohydrates into fat for storage. This dual mechanism — breaking down existing fat while preventing new fat formation — makes it uniquely effective for metabolic optimization.

No GH axis interference

Because AOD-9604 only contains the C-terminal fragment of HGH, it does not bind to the full HGH receptor, does not raise IGF-1, and does not affect insulin or blood glucose. This profile makes it appropriate for longer-term use without the metabolic concerns associated with full HGH replacement.

Dosing guide

Dosing varies depending on your goal and method of administration. Always work with a licensed provider to determine your specific protocol.

GoalTypical doseFrequencyMethod
Fat loss300–500 mcgOnce daily before training or fastedSubcutaneous injection
Maintenance250 mcgOnce dailySubcutaneous injection
Stacked with Semaglutide300 mcg AODDailySubcutaneous injection
Stacked with Tesamorelin250 mcg AODDaily at bedtimeSubcutaneous injection

Important: Dosing information here is educational only. The right protocol for you depends on your health history, goals, and body weight. A licensed clinic can prescribe and supervise your treatment safely.

Side effects & safety

AOD-9604 has demonstrated an excellent safety profile in clinical trials and real-world use. It completed Phase 2 and Phase 3 clinical trials with no significant safety concerns identified — a distinction that separates it from many peptides that have only animal data.

Possible side effects include: Mild injection site reactions, occasional headache, and transient flushing. No serious adverse events have been attributed to AOD-9604 in clinical use. Importantly, no effects on blood glucose, insulin sensitivity, or pituitary function have been observed at therapeutic doses.

Related guides: Semaglutide for weight loss | Tesamorelin for visceral fat | Peptides for weight loss

Frequently asked questions

How does AOD-9604 compare to Semaglutide?
AOD-9604 and Semaglutide work through completely different mechanisms. Semaglutide is a GLP-1 agonist that reduces appetite and slows gastric emptying — it works primarily by reducing caloric intake. AOD-9604 works directly on fat cells to trigger lipolysis, independent of appetite. Many clinics combine both for a synergistic approach: Semaglutide to reduce intake and AOD-9604 to accelerate fat burning.
Does AOD-9604 build muscle too?
No — AOD-9604 is specifically the fat-burning fragment of HGH and does not have the growth-promoting or muscle-building effects of full HGH. For muscle gains, you would need to stack it with growth-promoting peptides like CJC-1295/Ipamorelin.
How long does it take to see results from AOD-9604?
Most users report noticeable fat loss within 4–8 weeks of consistent daily use, particularly in the abdominal area. Results are enhanced when combined with a caloric deficit and regular exercise. Unlike Semaglutide, AOD-9604 does not cause rapid weight loss — it is a more gradual metabolic optimization tool.
Is AOD-9604 suitable for people with diabetes or insulin resistance?
AOD-9604’s lack of IGF-1 stimulation and blood glucose effects makes it one of the safer fat-loss peptides for metabolically compromised patients. However, always disclose any metabolic conditions to your provider before starting any peptide protocol.
How do I get AOD-9604?
AOD-9604 requires a prescription from a licensed physician. Functional medicine and weight management clinics are the most common prescribers. Tides connects you with vetted providers — join the waitlist to get matched with a clinic near you.