AOD-9604: the complete guide.

The short version.

If you read nothing else, read this. The whole guide in a handful of bullets.

Quick reference.

What is AOD-9604?

AOD-9604 is a short peptide, which simply means a small chain of amino acids, the same building blocks that make up the proteins in your body. It is a synthetic copy of the very end of human growth hormone, specifically the 15 amino acids numbered 176 to 191, the region tied to fat metabolism.

The thinking behind it is clever. Growth hormone does a lot of things at once, some wanted (fat loss) and some not (raising blood sugar, growing tissue, lifting IGF-1). Researchers at Monash University in Australia isolated just the fat-handling tail, hoping to keep the fat-burning effect and drop the rest. AOD-9604 is that isolated fragment.

The version sold by vendors arrives as a freeze-dried white powder in a small sealed vial. It is not a steroid, not a stimulant, and unlike a GLP-1 it does not work by killing your appetite. People reach for it for one theme: a gradual metabolic nudge toward burning stored fat.

Worth saying plainly: AOD-9604 is not an approved medicine anywhere. It is sold strictly for research use only. And the honest truth is that its human fat-loss results were modest, and the biggest trial failed to reach statistical significance, which ended its commercial development in 2007. We get into what that means further down.

How it works in the body.

You do not need a biology degree to follow this. Here is the simple picture, then a little more for the curious.

The core idea is that AOD-9604 mimics the fat-handling tail of growth hormone, so it acts on fat cells while leaving the rest of the hormone's effects alone. It does this through a couple of overlapping mechanisms that show up in the research.

• More fat breakdown (lipolysis). AOD-9604 is studied for signaling fat cells to release and burn their stored fat, the same lipolytic effect linked to growth hormone, but isolated to that one job.
• Less fat storage (lipogenesis). It also appears to dial down the process of laying down new fat, so the balance tips slightly toward burning rather than storing.
• No growth-hormone baggage. The key finding across the trials is what it did not do: it did not raise IGF-1, did not affect insulin, and did not disturb blood sugar. That clean metabolic profile is the whole point of separating it from full GH.

How to take it: routes of administration.

AOD-9604 is an injectable peptide. It is not a meaningful oral option, so there is really only one practical route. Here is the honest comparison.

Where to inject.

If you go this route, these are the sites people use. Rotate so no single area gets sore.

The easiest spots are the belly (about 2 inches either side of the navel), the love handles, the front of the thigh, and the back of the upper arms. Rotate every injection.

So which should a beginner pick? For everyone, subcutaneous is the answer: absorption is reliable, the needle is tiny, and the morning fasted shot fits easily into a routine. Intramuscular adds nothing here, and oral does not work.

Reconstitution: mixing it.

AOD-9604 arrives as a dry powder, so before you can inject it you reconstitute it, which just means adding liquid to turn the powder into something you can draw into a syringe. It sounds technical but takes about a minute.

Once it is mixed, the only real question is how many units to draw. That depends on your vial size, your water amount, and your target dose, and it is easy to get wrong by hand, especially because AOD-9604 is dosed in micrograms.

• Use bacteriostatic water, often called BAC water. The small amount of preservative keeps the mixed vial usable for weeks.
• Add the water slowly, down the inside wall of the vial. A common mix is a 5 mg vial plus 2 mL of BAC water, which gives a concentration of 2.5 mg/mL, or 2500 mcg/mL.
• Swirl, do not shake. Gently roll the vial until the powder dissolves. Shaking can damage the peptide.
• Store it in the fridge once mixed, and keep it out of direct light.

Open the dosage calculator to turn your vial and dose into an exact number of units. As a worked example: a 5 mg vial mixed with 2 mL of BAC water gives 2500 mcg/mL, so a 300 mcg dose is 0.12 mL, which is 12 units on a U-100 insulin syringe, and that vial holds about 16 doses.

Dosing by goal.

There is no single official dose for AOD-9604, because it is not an approved medicine. What follows is the range people commonly run, based on the doses used in the clinical trials. The defining feature is a small daily microgram dose, usually taken fasted.

Standard daily dose

The most common pattern is about 300 mcg once a day. That sits in the middle of the range studied in the trials, which tested 250 mcg, 500 mcg, and 1000 mcg daily. Most people start low rather than chasing the top of the range.

Timing

Protocols overwhelmingly call for a fasted morning shot, taken 30 to 60 minutes before eating. The logic is that insulin is already low in the fasted state, and high insulin works against the fat-breakdown signal AOD-9604 is trying to send.

Longer runs

People running beyond about 12 weeks sometimes use a 5-days-on, 2-days-off schedule, on the theory that it limits receptor desensitization. This is a community practice, not something proven in the trials.

Cycling and timing.

A cycle just means a defined run of time on the peptide, followed by a break. For AOD-9604 the common pattern is a run of roughly 12 weeks, which lines up with the trial durations, then time off, rather than running it indefinitely.

Why not just run it forever? Mostly because the long-term human safety data beyond the trial windows does not exist, and because the effect is modest enough that an open-ended run rarely makes sense. The cautious approach is a focused block, then a pause to assess.

• Hold the daily schedule through your cycle, dosing fasted in the morning at roughly the same time.
• Consider a 5-on, 2-off pattern on longer runs, a community habit aimed at limiting receptor desensitization.
• Take a real break after a 12-week block before considering another. If fat loss stalls, that is a sign to reassess the whole plan with a provider.

Stacking AOD-9604.

AOD-9604 is often layered with other peptides for body composition, though it is usually the supporting act rather than the star.

See full recipes, dosing, and how people run them on the stacks page.

Side effects and safety.

In the trials, AOD-9604 was about as well tolerated as placebo, which is one of its few genuinely strong points. When side effects show up they tend to be mild and temporary. The ones reported most often are:

• Headache, the most commonly reported effect across the studies.
• Mild gut effects, such as nausea, diarrhea, or flatulence in some people.
• Fatigue or dizziness, usually mild and passing.
• Injection-site irritation, a little redness or a small bump, which is why rotating sites matters.

Who should be cautious.

Some people have clear reasons to be extra careful, or to avoid AOD-9604 entirely until they have spoken with a licensed provider.

• Pregnant or breastfeeding. There is no safety data here, so this is a hard avoid.
• Competing athletes. AOD-9604 is prohibited by WADA at all times under the S.0 category for substances with no regulatory approval, so it will count as a doping violation.
• Anyone expecting dramatic weight loss. This is a caution of expectations: the evidence does not support big results, and the GLP-1s are the peptides with real data. Going in expecting a transformation sets you up to be disappointed.
• Anyone on other medications. If you take prescription drugs or manage a chronic condition, talk to your provider first.

And the universal one: whoever you are, talk to a licensed healthcare provider before starting AOD-9604. This guide is educational, not a substitute for personalized medical advice.

Where to buy it safely.

This is where a lot of beginners get burned, because peptide quality varies wildly between vendors and the cheapest vial is not always the real deal. Our honest take: do not shop on price alone, shop on price plus independent lab data.

• Compare vendors side by side. Price ranges are wide, and the difference between the lowest and highest listing can be large for the exact same compound.
• Look for recent third-party lab tests. The gold standard the community looks for is a recent Janoshik certificate of analysis showing purity for the batch you are actually buying.
• Favor recent COAs. An old lab result on a different batch tells you little. The fresher the test, the more it means.
• Be skeptical of suspiciously cheap listings with no testing behind them.

That is exactly the comparison we put together. On our AOD-9604 product page you can compare vendor prices, see which batches have public lab data, and view the grades we assign from that data. From there you can head to the buy page to line up your options.

Questions, answered straight.