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โ„– 017

AOD-9604

A fat-loss peptide. It's a modified fragment of HGH (residues 176-191) that targets fat metabolism without the full GH side effect profile.

Fat Loss
Evidence: Anecdotal

AOD-9604: A fat-loss peptide. It's a modified fragment of HGH (residues 176-191) that targets fat metabolism without the full GH side effect profile. AOD-9604 is a fragment of HGH designed to target fat metabolism without the bulky GH side effects.

FDA โ“˜
Not approved
WADA
Banned
Typical dose
250-500 mcg sub-q daily
Half-life โ“˜
~30 minutes
Route โ“˜
Subcutaneous
Schedule
Once daily, fasted
In plain English

AOD-9604 is a fragment of HGH designed to target fat metabolism without the bulky GH side effects. Subtle compared to the GLP-1 drugs. Mostly used as a stack add-on during a cut, not as a primary fat-loss tool.

Status & legalityWhat do these mean? โ†’
Natty? โ“˜
Not natty
FDA โ“˜
Not approved

Not FDA approved. Failed Phase 2 obesity trial.

Compounding โ“˜
Not on 503A list

Its nomination was withdrawn in 2024, and FDA's advisory committee voted against including it in December 2024. It is not on the 503A list and is not scheduled for another review.

WADA โ“˜
Banned (S2)
Prescribed โ“˜

Not prescribed in conventional medicine.

Who it's for

  • โ†’Users wanting localized fat-loss support
  • โ†’People who can't tolerate GH-class side effects (water, glucose impact)
  • โ†’Stacks layered onto a clean cut

What to expect

  1. Week 1

    Nothing dramatic. Subtle appetite shift.

  2. Week 4

    Subtle body comp changes for users running it alongside a diet.

  3. Week 8

    Plateau. Take a break.

Looking at AOD-9604? Your next 3 steps

  1. 1Work out your syringe units

    Vial size + BAC water turns into the exact units to draw for AOD-9604.

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  2. 2See what to stack & monitor

    The companion supplements and the bloodwork worth tracking on this kind of protocol.

    Bloodwork guide โ†’
  3. 3Save it & ask the Coach

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How it works (mechanism)

Fragment of HGH (residues 176-191) that retains lipolytic (fat-burning) activity but lacks the residues responsible for IGF-1 stimulation, water retention, and insulin resistance.

Dosing protocol

Members only

Stacks well with

Members only

Side effects

01Mild injection-site irritation
02Rare: headache, fatigue

When NOT to use

  • โš Active malignancy
  • โš Pregnancy / nursing

Common mistakes

  • โ€ข Expecting GLP-class results (it isn't that potent)
  • โ€ข Dosing post-meal (blunts the fat-mobilization effect)
  • โ€ข Running it without diet alignment

What it actually is

AOD-9604 is a modified copy of the last 15 amino acids of human growth hormone โ€” the tail end of the molecule, isolated on the theory that this fragment carries the fat-burning action without the rest of growth hormone's effects. It was developed as an anti-obesity drug by an Australian company, taken into human trials, and abandoned when it did not beat placebo. It is not approved anywhere.

The proposed mechanism is that this fragment stimulates lipolysis, the breakdown of stored fat, and inhibits lipogenesis, without reproducing the growth hormone receptor effects that raise IGF-1 or affect blood sugar. That is a preclinical observation rather than a demonstrated receptor separation โ€” FDA concluded the molecular target and mechanism are not established, and animal work implicates beta-3 adrenergic signalling. The decisive part is what happened next: given to people, the fat loss did not follow.

Forms, and which is which

Lyophilised powder, subcutaneousHow nearly all use happens

Buyer reconstitutes. Research-chemical supply with unverified identity.

Verdict: The standard form, entirely unregulated.

Oral preparationsThe route the trials actually used

The negative human obesity trials were largely oral, so oral administration is not impossible โ€” it is the route on which the compound failed to beat placebo. FDA found no adequate human pharmacokinetic data.

Verdict: The route that was tested, and the one that did not work.

Sublingual and topical preparationsNothing supported

No evidence that an intact active dose is absorbed by either route.

Verdict: Unsupported as described.

Topical creamsNothing supported

Sold for localised fat reduction. There is no evidence topical AOD-9604 penetrates adequately or reduces fat where applied.

Verdict: Unsupported by any data on this compound.

HGH fragment 176-191The near-identical alternative

Essentially the same fragment without AOD-9604's stabilising modification, sold at the same claims with even less behind it.

Verdict: The same idea with a thinner file.

What it is claimed to do, graded

Causes fat loss in humansNone shown

Tested for exactly this and it failed. The clinical programme included several randomised, double-blind, placebo-controlled studies, the largest enrolling over 500 people on an oral formulation, and it found no significant advantage over placebo. Note the distinction: our PubMed query returns no records, which is a fact about the query, not about the world โ€” the trials happened and were negative.

Stimulates lipolysis without growth hormone side effectsLimited

Preclinical work shows lipolytic activity without conventional growth hormone receptor effects. The human target is not established, and none of it translated into weight change in people.

Helps cartilage and joint repairNone shown

A newer marketing angle. Recent orthopaedic reviews list it among unapproved peptides used without supporting evidence.

Does not affect blood sugar or IGF-1Moderate

One of the better-supported claims about it, and also the least useful, since the thing it is supposed to do instead has not been shown.

Grades describe how much human evidence exists for that specific claim, not whether it will work for you or whether it is safe.

Pros and cons

Pros
  • โ€ข The mechanistic idea is genuinely clever and the receptor separation is real
  • โ€ข It went through real randomised human trials, which is more than almost anything else here can say
  • โ€ข Conventional growth hormone receptor effects were not reproduced in preclinical work
Cons
  • โ€ข Failed its clinical programme for the exact use it is now sold for
  • โ€ข Zero indexed human-trial records and a grade of D on the site's own ladder
  • โ€ข Sold widely in oral and topical forms that cannot work as described
  • โ€ข Research-chemical supply with unverified identity
  • โ€ข The trial safety experience was principally oral and intravenous, not the subcutaneous grey-market product โ€” FDA also noted possibly treatment-related severe diarrhoea and chest tightness, no human safety data for subcutaneous or transdermal use, and unresolved immunogenicity questions
  • โ€ข The 'no side effects' selling point is only meaningful if it does something, and it did not

When to stop

  • โ€ข Twelve weeks with no change against a controlled diet โ€” that is the answer, not a reason to add more
  • โ€ข Injection-site reaction that spreads
  • โ€ข Any new cancer diagnosis
  • โ€ข You have started attributing diet-driven results to it

Interactions

Other fat-loss compoundsCaution

Stacking makes any result unattributable, and AOD-9604 is the component least likely to be responsible for one.

Growth hormoneMonitor

Same parent molecule, different receptor behaviour. No interaction data exists.

A calorie deficitCompatible

Not an interaction. It is the intervention that produces the result people credit to the peptide.

Active malignancyAvoid

A growth hormone fragment in a body with a tumour is unstudied in either direction.

Nothing well characterisedCaution

There is effectively no human interaction literature. Absence of documented interactions is not evidence of safety.

Is this for you?

Probably worth reading further if
  • โ€ข Realistically nobody on the current evidence โ€” the honest read is that this one was tested and did not work
Skip it if
  • โ€ข You want fat loss โ€” that is the claim with a negative result behind it
  • โ€ข You have active cancer
  • โ€ข You are pregnant or nursing
  • โ€ข You are buying an oral, sublingual or topical version

The one number

The largest randomised oral obesity trial enrolled over 500 people and found no significant advantage over placebo
AOD-9604 clinical programme; FDA bulk drug substances review

Sources for the claims above

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AI Coach, live sample
Member answer
is 250mcg of bpc enough for a knee injury?
For a knee, is the standard working dose and a solid place to start. The trick with BPC is consistency, give it weeks, not days. , run it , and don't drop below , results tend to fall off under that line. If nothing's moved by week 3, that's when earns its place.
how much bac water for a 10mg reta vial?
is the standard play for a 10 mg reta vial. That gives you , clean unit math across the whole titration: on a 100-unit insulin syringe. Run instead if you want fewer, more concentrated shots. Most people titrate up over , and that mix keeps the numbers cleanest.
what should i track on bloodwork for tirzepatide?
Lipid panel, ALT/AST (liver enzymes), and an A1C, baseline before you start then every 3 months. If you've got metabolic-syndrome history, add fasting glucose and insulin so you can actually watch insulin sensitivity improve. You don't need a big hormone panel for a GLP-1.

Numbers redacted in this preview. Members get the full answer, on their own stack.

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Frequently asked

What is AOD-9604?+
AOD-9604 is a fragment of HGH designed to target fat metabolism without the bulky GH side effects. Subtle compared to the GLP-1 drugs. Mostly used as a stack add-on during a cut, not as a primary fat-loss tool.
Is AOD-9604 FDA approved?+
Not FDA approved. Failed Phase 2 obesity trial.
Is AOD-9604 legal?+
AOD-9604 is not FDA-approved, so there is no approved prescription version. Most supply is sold as "research only" by peptide vendors. A compounding pharmacy may only use substances the FDA permits for compounding, and many research peptides are not permitted โ€” do not assume a compounded prescription is available. Possession is generally not criminalized but distribution without authorization may be. Verify local laws.
Is AOD-9604 banned by WADA?+
AOD-9604 is on the WADA prohibited list under Banned (S2).
Are you still natty after taking AOD-9604?+
No. AOD-9604 is a performance-enhancing peptide and would disqualify a strict natty claim.
Do doctors prescribe AOD-9604?+
Not prescribed in conventional medicine.
What's the typical dose of AOD-9604?+
Dosing depends on your goal, experience, and tolerance. The full AOD-9604 protocol (dose, frequency, and how to titrate) is in the members section on the entry page.
What are the side effects of AOD-9604?+
Common side effects include: Mild injection-site irritation; Rare: headache, fatigue. Less common effects and full safety details are on the entry page.
How long until AOD-9604 starts working?+
Nothing dramatic. Subtle appetite shift.
What can you stack with AOD-9604?+
AOD-9604 is commonly combined with complementary compounds. The full stacking protocol (what to pair, dosing, and timing) is in the members section on the entry page.
Where do people get AOD-9604?+
Pepdex does not sell, ship, or recommend suppliers. AOD-9604 is not FDA-approved; prescription versions require licensed clinical care, and "research only" markets carry real legal and quality risks. /coa explains how to verify a Certificate of Analysis and /guides/scam-vendor-spotting covers the red flags.
AOD-9604 vs Tesamorelin, which is better?+
How AOD-9604 and Tesamorelin compare on research category, evidence tier, regulatory status, and reported side effects. Full head-to-head comparison: https://pepdex.co/compare/aod-9604-vs-tesamorelin
AOD-9604 vs HGH Fragment 176-191, which is better?+
AOD-9604 vs HGH Fragment 176-191: two HGH-derived fat-loss peptides. Mechanism overlap and practical differences. Full head-to-head comparison: https://pepdex.co/compare/aod-9604-vs-hgh-frag-176-191

Common questions about AOD-9604

Head-to-head with AOD-9604

Compare
AOD-9604 vs Tesamorelin โ†’
Compare
AOD-9604 vs HGH Fragment 176-191 โ†’

Tracked alongside AOD-9604

Same goal, different aisle โ€” each graded on its own evidence in the Pepdex catalog.

Whey protein โ†’
muscle preservation is the open question on any GLP-1 run
Electrolytes โ†’
appetite suppression cuts fluid and sodium intake with it
Fiber โ†’
the constipation answer that shows up in every GLP-1 thread
Metformin โ†’
the prescription neighbour people compare these protocols against

More in Fat Loss

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Strong weight loss with a cleaner side effect profile than semaglutide. A dual agonist (GLP-1 + GIP), FDA-approved as Mounjaro / Zepbound.

โ„– 010
Semaglutide

The original weight-loss wave, sold as Ozempic / Wegovy. A GLP-1 agonist.

โ„– 003
Retatrutide

Triple agonist (GLP-1 + GIP + glucagon) from Eli Lilly. In trials it outperforms Tirzepatide for weight loss.

โ„– 059
Liraglutide (Saxenda / Victoza)

Daily GLP-1 receptor agonist. FDA-approved 2010 (Victoza, T2D) and 2014 (Saxenda, obesity). The first wave of modern GLP-1 weight-loss therapy and direct predecessor to Semaglutide.