Humanin: 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 Humanin?

Humanin 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. What makes it unusual is where its instructions live: not in the main nuclear genome but inside mitochondrial DNA, the tiny separate genome inside your cells' power plants. That makes it one of a small family called mitochondrial-derived peptides.

It was discovered in 2001 by researchers screening for genes that could protect neurons from the kind of cell death seen in Alzheimer's models. They found a small peptide that did exactly that, and named it Humanin. Your body produces it naturally, and notably, circulating levels tend to decline as people get older, which is part of why it landed in the longevity conversation.

The version sold by vendors arrives as a freeze-dried white powder in a small sealed vial. It is not a steroid, not a hormone, and not a stimulant. People reach for it because it is studied for one theme above all: helping cells survive stress and keeping mitochondria working, the cellular machinery that aging tends to wear down.

Worth saying plainly: Humanin is not an approved medicine anywhere. It is sold strictly for research use only, and there is no completed human clinical trial using it as a therapy. The evidence is almost entirely from cells and animals. 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 Humanin acts like a survival signal for cells under stress, and because it circulates in the blood it acts body-wide. It does this through a few overlapping mechanisms that show up repeatedly in the research.

• Survival signaling. Outside the cell, Humanin activates a receptor complex (CNTFR/WSX-1/gp130) that switches on a pathway called STAT3, which is associated with cell survival and calmer inflammation.
• Blocking self-destruct. Inside the cell, it interferes with pro-apoptotic proteins such as BAX and IGFBP-3. In plain terms, it helps stop stressed cells from triggering their own death program.
• Metabolic and mitochondrial support. It is studied for improving insulin sensitivity and glucose handling, and for supporting mitochondrial function, which is the energy angle that ties it to aging.

How to take it: routes of administration.

Humanin is an injectable peptide, and unlike some peptides there is no meaningful oral or nasal option, because it would not survive digestion. So the route question is simple. 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? There is really only one sensible answer: subcutaneous. The needle is tiny, absorption is reliable, and because Humanin works through the whole body you do not gain anything from the more invasive intramuscular route. Oral simply does not work for this peptide.

Reconstitution: mixing it.

Humanin 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 native Humanin and the HNG analog are dosed on completely different scales.

• 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 10 mg vial plus 2 mL of BAC water, which gives a concentration of 5 mg/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 10 mg vial mixed with 2 mL of BAC water gives 5 mg/mL, so a 1 mg dose is 0.2 mL, which is 20 units on a U-100 insulin syringe, and that vial holds about 10 doses. If you are running the HNG analog, your numbers will be far smaller, so re-check them.

Dosing by goal.

There is no single official dose for Humanin, because it is not an approved medicine and no human trial has set one. What follows is the range people commonly run, organized by phase. The single most important thing in Humanin dosing is knowing whether you have native Humanin or the HNG analog.

Native Humanin

The community range for native Humanin is roughly 1 to 5 mg subcutaneously, most often around 1 mg once daily, run in cycles. Many people start at the low end and only adjust slowly, because the human data is so limited.

The HNG analog

HNG (S14G-Humanin) is a stabilized analog that is roughly 1,000 times more potent than native Humanin and is dosed in micrograms, not milligrams. If you have HNG and dose it like native Humanin, that is a serious overdose. Always confirm which form your vial contains.

Cycling it

Rather than running it indefinitely, people typically do a block of roughly 4 to 8 weeks on, then a break. Humanin is subtle and systemic, so this is a long-game peptide, not something dosed for an acute effect.

Cycling and timing.

A cycle just means a defined run of time on the peptide, followed by a break. For Humanin the common pattern is a block of roughly 4 to 8 weeks, then time off, rather than running it indefinitely.

Why not just run it forever? Mostly because the long-term human safety data does not exist yet, and nobody knows the effect of keeping a survival-signaling peptide elevated for months on end. The cautious and widely followed approach is a focused block, then a pause.

• Hold a steady daily schedule through your cycle, dosing at roughly the same time each day.
• Take a real break after each block before considering another, rather than running it continuously.
• Re-confirm your form and units at the start of every cycle, especially if you switched vials between native Humanin and HNG.

Stacking Humanin.

Humanin is usually run as part of a mitochondrial or longevity protocol rather than alone. It is most associated with one partner above all.

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

Side effects and safety.

In the reports we see, Humanin is generally described as well tolerated at research doses, with side effects that tend to be mild when they show up at all. Honestly, the bigger issue is how little human data exists. The things people mention most are:

• Injection-site irritation, a little redness or a small bump, which is why rotating sites matters.
• Mild fatigue or a flu-like feeling that some people describe early in a cycle.
• Dosing mistakes, usually from confusing native Humanin with the far more potent HNG analog.
• Unknowns, the honest one: the long-term effects of dosing this peptide in humans simply have not been studied.

Who should be cautious.

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

• Pregnant or breastfeeding. There is no safety data here, so this is a hard avoid.
• A history of cancer, or active cancer. Because Humanin promotes cell survival and blocks the self-destruct signals that the body also uses to clear abnormal cells, caution is widely advised. This is a conversation for an oncologist, not a forum.
• Competing athletes. Humanin is not named on the WADA list, but the strict-liability framework means a positive could still be a problem. Be cautious.
• 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 Humanin. 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. And with Humanin, confirm the exact form too.

• 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.
• Confirm native Humanin vs HNG. They are dosed on totally different scales, so make sure the listing is clear about which one you are buying.
• 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.
• Be skeptical of suspiciously cheap listings with no testing behind them.

That is exactly the comparison we put together. On our Humanin 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.