Ipamorelin
Also known as NNC 26-0161
Ipamorelin is a synthetic pentapeptide that binds the ghrelin receptor and stimulates the pituitary to release growth hormone. It is described as selective because, in the studies conducted, it produced comparatively little effect on cortisol and prolactin relative to earlier secretagogues. It was investigated pharmaceutically and discontinued.
Who has Ipamorelin in stock
| Supplier | Listing | Price | Per mg | |
|---|---|---|---|---|
| XL PeptidesBest valueUK | Ipamorelin 5mg Research Peptide | £15.99 | £3.20 | In stock, go |
| Peptides UKUK | Ipamorelin 5mg | £20.95 | £4.19 | In stock, go |
| Peptides UKUK | Ipamorelin 2mg | £9.95 | £4.98 | In stock, go |
| Baltic PeptidesEU and UK | Ipamorelin 10mg | €49.99 | €5.00 | In stock, go |
| PEAK_PEPTIDEInternational | Ipamorelin | €26.90 | – | In stock, go |
| XL PeptidesUK | Ipamorelin + CJC-1295 No DAC Bundle | 2 Vials | £29.99 | – | In stock, go |
| HiPeptidesUK | Ipamorelin | £39.99 | – | In stock, go |
| HiPeptidesUK | CJC-1295 (No DAC) + Ipamorelin Blend | £39.99 | – | In stock, go |
| True PeptidesInternational | Ipamorelin | US$45.00 | – | In stock, go |
| Baltic PeptidesEU and UK | CJC-1295 No DAC / Ipamorelin Blend (5/5mg) (10/10mg) | €49.99 | – | In stock, go |
| PEAK_PEPTIDEInternational | CJC-1295 (no DAC) + Ipamorelin | €64.90 | – | In stock, go |
| AminoPeptidesUK | Tesamorelin 10mg + Ipamorelin 2mg Peptide Bundle | £65.00 | – | In stock, go |
| 99 Purity PeptidesUS | CJC-1295 + Ipamorelin Spray | US$84.99 | – | In stock, go |
| Peptides UKUK | Ipamorelin 10mg + Mod GRF 1-29 10mg | £99.95 | – | In stock, go |
| Peptides UKUK | Ipamorelin 30mg + Mod GRF 1-29 30mg | £269.95 | – | In stock, go |
Live stock is checked hourly at 10 suppliers. A further 7 vetted suppliers have no live feed yet, so we never show them as in stock. We earn a commission from some supplier links when you buy. It costs you nothing extra and never changes the order, which is by price per mg.
What it has been studied for
- Growth hormone release in animal and early human studies
- Post-operative ileus, in a clinical programme later discontinued
- Selectivity relative to cortisol and prolactin release
Evidence level: Early human data. Human data exists, but read the details above before assuming it applies to you.
What happened in human trials
Tested in a phase 2 trial for gut recovery after bowel surgery. Side effects were similar to placebo, and the trial missed its main goal. No long-term data.
Prohibited in drug-tested sport under the World Anti-Doping Code.
UK legal status
Not licensed as a medicine in the UK. Prohibited in sport at all times under WADA class S2 as a growth hormone secretagogue.
Handling
Lyophilised powder. Often supplied in smaller vial sizes than repair peptides, which means the mixing arithmetic matters more: a small vial in too much water produces a dose that lands between clicks. Commonly 2mg or 5mg per vial.
Questions
Why was Ipamorelin never approved?
Its clinical programme, aimed at post-operative ileus, was discontinued. Discontinuation is usually about trial results or commercial priorities rather than a specific safety finding, but the practical outcome is the same: it did not complete approval.
What does 'selective' mean here?
That in the studies conducted it raised growth hormone with relatively little effect on cortisol and prolactin, compared with older secretagogues that affected several hormones at once.
Before you buy anything, run the four-question check for red flags that apply to you.