Verified ComparisonLast updated: 21 April 2026
Mod GRF 1-29 vs CJC-1295
Mod GRF 1-29 (tetrasubstituted) is the modified form of GHRH(1-29) with enhanced stability. CJC-1295 is a long-acting depot analog. Both stimulate GH via GHRH.
Mod GRF 1-29
GH Releasing
4.2/ 5
A−
CJC-1295
GH Releasing
4.4/ 5
A
Editor's note
Mod GRF 1-29 enables pulsatile dosing; CJC-1295 provides sustained release in research protocols.
| Criterion | Mod GRF 1-29 | CJC-1295 |
|---|---|---|
| Duration | Hours (short-acting) | Days (long-acting) |
| Dosing flexibility | Multiple daily doses | 2-3x weekly |
| GH pulse amplitude | Acute, controllable | Sustained elevation |
| Potency per dose | Modest | High |
| Research protocol diversity | High (pulsatile studies) | High (chronic studies) |
Frequently asked questions
Both; Mod GRF 1-29 for acute/pulsatile designs, CJC-1295 for sustained-elevation studies.
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