Science
CJC-1295 + Ipamorelin: Anatomy of a Research Pair
Why two peptides — a GHRH analog and a GHRP — are commonly studied together, and why REPRIME ships them as a single blended vial rather than two separate ones.
REPRIME's blended vial of CJC-1295 and Ipamorelin is one of the most common research-pair products in the catalog. The pairing is intentional: each peptide engages a distinct part of the growth-hormone axis, and combining them in a single vial is more reliable than asking researchers to weigh and dissolve two separately.
Two different mechanisms, one axis
CJC-1295 is a GHRH (growth-hormone-releasing hormone) analog. Its N-terminus is modified to extend serum half-life from minutes to hours; the modification protects it from DPP-4 cleavage. Ipamorelin is a selective GHRP (growth-hormone-releasing peptide) that acts on the ghrelin receptor instead of the GHRH receptor.
The two pathways converge on the same downstream hormonal output but through different upstream receptors — a useful experimental setup for researchers who want to study the combined effect, or who want a more sustained release profile than either compound alone provides.
Why the blend is shipped as a single vial
Blending at REPRIME's compounding step means the ratio between the two components is exact and verified. A lab that orders separate vials of CJC-1295 and Ipamorelin has to do the math, weigh small masses precisely, and combine them — sources of error that compound across a protocol and across labs running similar studies.
The blended vial eliminates that step. Reconstitute, draw, use. The ratio is on the COA.
The 10 mg vial
Total peptide mass is 10 mg across both components. The exact mass ratio appears on the batch Certificate of Analysis. Reconstitution gives a homogeneous solution; vortexing isn't required.
Quality
Mass spectrometry confirms both components are present at the expected ratio (separate peaks at distinct m/z values, no surprise contaminants). HPLC separates and quantifies each peak independently, and the report shows main-peak purity for each.
Shop CJC-1295 + Ipamorelin.