CJC-1295 + Ipamorelin UK — Blend Research Guide, DAC vs No-DAC
Also known as Mod GRF 1-29 / Ipamorelin blend
The CJC-1295 and Ipamorelin combination is one of the most searched peptide blends in the UK research market. It pairs a growth-hormone releasing hormone analogue with a selective growth-hormone secretagogue, each acting on a different receptor within the same axis.
This guide explains what the blend is, the critical difference between the DAC and no-DAC forms of CJC-1295, how the two compounds are handled in research, and the legal status of buying these peptides in the UK.
For in vitro research use only — not for human or animal consumption. Not a licensed medicine in the UK. Nothing on this page is medical advice.
What is the CJC-1295 + Ipamorelin blend?
In research literature, CJC-1295 and Ipamorelin are frequently studied together because they target complementary receptors. CJC-1295 is a GHRH analogue that binds the GHRH receptor; Ipamorelin is a selective agonist of the ghrelin receptor (GHS-R1a). Together they provide a dual-receptor model for investigating growth-hormone-axis signalling.
The blend most commonly referenced is CJC-1295 without DAC — also called Modified GRF (1-29) — combined with Ipamorelin. This is the short-acting, pulsatile form of CJC-1295, not the long-acting DAC version.
DAC vs no-DAC — which version is in the blend?
The 'DAC' (drug affinity complex) extends the half-life of CJC-1295 by binding to serum albumin. That sounds useful, but it changes the research profile from pulsatile to sustained. Most combination protocols in the literature use the no-DAC form because it produces a signal closer to natural GHRH release.
- CJC-1295 no-DAC (Mod GRF 1-29) — short half-life, pulsatile signal, typically the form paired with Ipamorelin.
- CJC-1295 with DAC — long half-life, sustained elevation, usually studied as a standalone compound.
- If you are sourcing a 'CJC-1295 + Ipamorelin' blend, confirm whether the CJC-1295 component is no-DAC, as that is the standard research pairing.
Why researchers combine CJC-1295 and Ipamorelin
Because the two peptides act on different receptors in the same pathway, combining them allows researchers to model additive or synergistic signalling without the confounding effects of non-selective secretagogues. Ipamorelin's selectivity — minimal cortisol or prolactin impact — makes it a cleaner variable than older GHRP compounds.
Buying this peptide in the UK
- UK-held stock — Same-day Royal Mail Tracked 24 dispatch on orders by 1pm, Monday to Friday.
- Royal Mail tracked with photo confirmation on every parcel.
- Independent HPLC and mass-spec testing with a batch-matched Certificate of Analysis.
- Discreet plain packaging and normal UK card checkout — no crypto required.
- buy Ipamorelin UK — stock, pricing and vial sizes
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View full shopFrequently asked questions
Is the CJC-1295 in the blend with DAC or without DAC?
The standard research blend uses CJC-1295 without DAC (Modified GRF 1-29). The no-DAC form has a short half-life and produces a pulsatile signal, which is why it is paired with Ipamorelin in combination protocols. Always confirm the form when sourcing.
What is the difference between CJC-1295 and Ipamorelin?
CJC-1295 is a GHRH analogue that acts on the GHRH receptor. Ipamorelin is a selective growth-hormone secretagogue that acts on the ghrelin/GHS-R1a receptor. They are different receptors within the same growth-hormone axis.
Is CJC-1295 + Ipamorelin legal in the UK?
CJC-1295 + Ipamorelin is legal to buy and possess in the UK for laboratory research purposes. It is not a licensed medicine in the UK, is not prescribed by the NHS, and is supplied strictly for in vitro research use only — not for human or animal consumption.
How is CJC-1295 + Ipamorelin reconstituted?
CJC-1295 + Ipamorelin is supplied as a sealed lyophilised vial. We do not provide preparation or usage guidance; it is sold for in vitro research use only.
Do you supply a Certificate of Analysis for CJC-1295 + Ipamorelin?
Yes. Our batches are independently HPLC and mass-spec tested and the batch number on the vial matches a published Certificate of Analysis, so purity can be verified before use.
How fast is UK delivery?
Stock is held in the UK. Orders are shipped the same day when ordered by 1pm, Monday to Friday, via Royal Mail tracked with photo confirmation, in discreet plain packaging with no product names on the outside.
Disclaimer: All products sold by Peptides UK 4U are for laboratory and research purposes only. They are not intended for human or animal consumption, diagnosis, treatment or prevention of any disease.