IGF-1 DES dosage and evidence
Written by Aaron CuhaReviewed Sep 2026
The short answer
IGF-1 DES is IGF-1 with its first three building blocks cut off. That stops the body's carrier proteins from grabbing it, so it is about ten times stronger but gone in minutes. All the research is in cells and animals. It has never been studied in people.
Evidence grade for IGF-1 DES: Animal or lab only. The rule: only animal or lab studies on this page. No study in people yet. The sum on this page: 2 lab studies, no human study. A grade counts how much has been done to people, not whether it works.
- People given it
- 0
- Human studies
- 0
- Found nothing
- 0
Dose
No human dose established
No published study on this page has given this compound to people and reported a result.
2 lab studies, no human study
5 effects reported, 4 unwanted, 1 wanted, by people using it, not a trial
Goal pages: Hormones and growth hormone
In plain English
In plain English, from Aaron
This is how I would explain it to a friend. The evidence, with the numbers, is further down the page.
IGF-1 DES is a shortened form of IGF-1, a growth hormone signal. The body's carrier proteins cannot grab it, so it acts hard and fast, then disappears within minutes. People inject it into one muscle hoping that muscle grows. It has never been studied in people.
What people take it for
- Growing one specific muscle by injecting into it.
- Faster muscle repair.
What studies in people showed
Nobody has tested it in people. In cell tests, it was about ten times stronger than normal IGF-1. The carrier proteins that hold IGF-1 back did not block it. That explains its short, local action. Whether injecting a muscle grows that muscle has never been tested.
What people report
Reports, not study results
The good
- A strong pump right after injecting into the muscle being trained.
The bad
- Experienced users warn not to expect visible size from it.
- Low blood sugar is the main safety worry. Users keep carbs on hand.
- Stinging at the shot site, blamed on the acid used to mix it.
- It is almost always stacked with other growth compounds, so nobody can say what it did alone.
Where these come from: Forum patterns from ExcelMale and EliteFitness, as summed up on this page. Those are self-reports. The lab findings come from the cell studies on this page.
My bottom line
Nobody has shown this grows a muscle in a person. Low blood sugar is a real risk with anything in the IGF-1 family. I would not inject it.
An opinion, not a finding. I am a coach, not a doctor.
What it has been measured to do
What people using it report
Real people telling you what happened to them. Nobody checked it, and the people who post are not a fair sample, so it cannot prove anything works. It is still the best guide on this page to what people actually do with IGF-1 DES, what they expect, and what goes wrong. The full account, including the negative reports, is below.
Animal and lab work, not yet tested in people
Real results, but from animals or cells, not people. What works in a mouse often does not work the same way in a person. Nobody can patent this, so nobody would ever earn back the cost of a study in people. That is usually why there is none.
- Growth hormone and IGF-11 animal or lab study · users report on this
35 of the 36 indexed goals have no study of any kind behind IGF-1 DES
No study in people, animals or cells on this page reports a result for these. That does not prove IGF-1 DES does nothing for them. It does mean anything you have heard about IGF-1 DES and one of these did not come from a study cited here.
Show full evidence
What is IGF-1 DES?
IGF-1 DES is IGF-1 with its first three building blocks cut off. That stops the body's carrier proteins from grabbing it, so it is about ten times stronger but gone in minutes. All the research is in cells and animals. It has never been studied in people.
IGF-1 DES is a shortened IGF-1 that the body makes naturally. The carrier proteins that normally hold IGF-1 cannot catch it, so it acts hard and fast right where it is injected. That is where the claim comes from that it grows the muscle you inject. How strong it is and how it works were well studied in cells and animals in the 1980s and 1990s. There are no human trials. It carries the same low blood sugar risk as other IGF-1 products.
How does IGF-1 DES work?
It switches on the IGF-1 receptor and escapes the carrier proteins that normally hold IGF-1 back. That gives a quick burst of action where it lands.
What do people who took IGF-1 DES report?
This is what real people say happened to them, good and bad. Nobody measured it. A report cannot tell a real effect from the lift people get just from expecting it to work, from a diet or training change made at the same time, or from what was really in the vial. We still put it near the top. It is the next best thing to a study in people: what happens when real people use it, including what goes wrong.
- Described almost entirely as working in one spot rather than through the whole body, the stated point being to inject into the muscle being trained. Timing is treated as the variable that matters, commonly just before or a short way into the session.
- Doses described are around 100 mcg a day, either split across many small injections into one area or as two larger ones, on runs of about four weeks.
- What people report is immediate and sensory, a strong pump and a sense of glucose being drawn into the working muscle, rather than anything measured.
- Experienced posters actively deflate expectations, saying localised growth is not the same as visible size and that nobody should expect dramatic change. That correction appears more often in these threads than any success report does.
- Practical problems take up a large share of the discussion: which fluid to mix the powder with, irritation attributed to acetic acid, refrigerated stability over a month, and a window of activity short enough that a mistimed injection is considered wasted.
- Blood sugar is the safety concern raised, with people describing keeping carbohydrate to hand and noting that insulin needs change. Abdominal distension is mentioned in the context of growth factors generally rather than this one specifically.
- It is almost always run alongside other compounds, frequently the longer acting IGF-1 variant or MGF, so very little of what is reported separates it from the rest of the stack.
Sources: IGF-1 DES threads on ExcelMale and EliteFitness, found by site-restricted search and read directly, September 2026. Nothing above is attributed to any specific post and no post is reproduced.
The evidence, in charts
Fig. 1a · how many people
0people have taken this in any study cited here
0 people · 0 studies in people
What this page cites instead is 2 lab studies in a dish. None of them gave the compound to a person.
Counted from the list of sources on this page. We draw this chart only when a study in people is cited. An empty one is the answer, not a gap in the page.
Fig. 1b · evidence mix
None of the 2 sources here are studies in people.
- Lab (cells in a dish) · cells or tissue2100%
Counted from the list of sources on this page. It counts only what we cite, so there may be more studies out there. A review counts once, however many studies it sums up.
Fig. 2 · evidence over time
Sources here come from just two years, 1989 and 1996.
Too few different years on this page to draw a timeline. The newest source on file is from 1996, more than five years ago. Research on it may have gone quiet.
Fig. 3 · legal status at a glance
US
Not approved
UK
Not approved
AU
Not approved
CA
Not approved
Not approved in any of the four countries shown. This is what the law says, not a verdict on the science. See Legal status below for the full text and any notes.
Fig. 4 · how much does what
Nobody has tested different amounts in people
This chart would show how the effect changes as the amount goes up. For this compound, nobody has measured that in people. So we leave it empty. We will not borrow an animal chart and pretend it works the same in people.
Fig. 5 · what the molecule is
- Kind of compound
- Peptide
- Molecule weight
- 7,371 Da (67 amino acids: IGF-1 without its N-terminal Gly-Pro-Glu)
- Half-life
- Stated in words, not a numbersee the exact wording below
- Chain length
- None on file
No amino acid sequence is on file for IGF-1 DES, so none is drawn rather than guessed from a name.
The studies we cite
- Lab (cells in a dish)1996Des(1-3)IGF-I: a truncated form of insulin-like growth factor-I
In a dish. It was about ten times stronger than IGF-1 in cell tests.
About tenfold higher potency than IGF-1 in cell assays.
- Lab (cells in a dish)1989IGF binding proteins inhibit IGF-1 but not des(1-3)IGF-1
In a dish. The carrier proteins that block IGF-1 did not block this shortened form. That explains why its action is local and short.
Explains the local, short-lived action.
Where to buy IGF-1 DES
1 seller lists IGF-1 DES in our latest read. They are ranked by trust score, then by archive rating, then by certificate tier, then by the lowest price per milligram. Archive evidence is counted before source-backed. Each path is out of 4, and the two are not added. A higher price does not raise the score. The letter is the certificate chip. 0 of them have a published certificate that names IGF-1 DES.
Some seller links may pay this site when you buy through them. A payment never changes a seller's tier or rank, and no seller has a say in any page.
| Seller | Trust score | Vial sizes | From, per mg | Certificate for IGF-1 DES | Seller link |
|---|---|---|---|---|---|
| San Diego Peptides | 49 WeakSource-backed 3 of 4. Archive evidence 2 of 4.A | 2 mg | $47.5 | None found for IGF-1 DES | View |
- LC Lab-confirmed: the issuing laboratory echoed this certificate back
- A Current certificate, independent laboratory named, laboratory not yet checked
- B Certificate published, but no laboratory link, older than a year, or the laboratory did not recognise the published lookup
- C No certificate could be read
Every listing and vial size for IGF-1 DES · How the trust score is counted
Sellers named on the price pages are ranked by certificate tier, then price, and any affiliate income is disclosed there. Naming a seller is not a recommendation to buy or use anything.
Common questions
Has IGF-1 DES been tested in people?
Not in any study cited here. IGF-1 DES is IGF-1 with its first three building blocks cut off. That stops the body's carrier proteins from grabbing it, so it is about ten times stronger but gone in minutes. All the research is in cells and animals. It has never been studied in people.
What is the IGF-1 DES dosage?
No human dose established. No published study on this page has given this compound to people and reported a result. 2 lab studies, no human study
Is IGF-1 DES FDA-approved?
Not approved
Does site injection cause site growth in people?
Nobody has tested it. The idea rests on its short, local action in cell and animal work.