CJC-1295 / Ipamorelin Stack vs Tesamorelin
A neutral, side-by-side comparison of two performance & growth hormone peptides — their mechanisms, dosing ranges, administration routes, side effects, and research evidence. For research and educational purposes only.
CJC-1295 / Ipamorelin Stack
The CJC-1295 (without DAC) and Ipamorelin combination is the most widely researched and community-validated growth hormone secretagogue stack. By pairing a GHRH analog with a selective GHRP, the two peptides act synergistically — producing GH pulses significantly larger than either compound alone, while maintaining a physiological pulse pattern and minimal side effects.
Full profileTesamorelin
Tesamorelin is an FDA-approved synthetic analog of growth hormone-releasing hormone (GHRH). Approved in 2010 as Egrifta, it is the only GHRH peptide with an approved clinical indication — reduction of excess visceral abdominal fat in people with HIV-associated lipodystrophy. It has the most robust human trial evidence of any growth hormone secretagogue, including dedicated studies on visceral fat and liver fat.
Full profile| CJC-1295 / Ipamorelin Stack | Tesamorelin | |
|---|---|---|
| Category | Performance & Growth Hormone | Performance & Growth Hormone |
| Also known as | CJC-1295 Ipamorelin, Mod GRF 1-29 Ipamorelin, CJC Ipa stack, CJC-1295 without DAC with Ipamorelin, GHRH GHRP combination | Egrifta, Egrifta SV, TH9507, GHRH analog |
| Evidence | FDA-approved | FDA-approved |
| Dosing range | 100mcg each–300mcg each mcg, once daily before sleep (or 2–3x daily for more aggressive protocols) | 1.28mg–2mg mg, once daily (subcutaneous) |
| Administration | Subcutaneous injection (both compounds), Administered together in the same injection | Subcutaneous injection (abdomen, with site rotation) |
| Key side effects | Water retention (mild, common), Tingling or numbness in hands/feet (transient), Headache (usually first 1–2 weeks), Fatigue or increased sleepiness (often desired at night dose) | Injection site reactions (erythema, pruritus), Peripheral edema, Arthralgia (joint pain), Myalgia |
| Cited sources | 2 references | 5 references |
Key differences
- Administration: CJC-1295 / Ipamorelin Stack — Subcutaneous injection (both compounds), Administered together in the same injection; Tesamorelin — Subcutaneous injection (abdomen, with site rotation).
- Dosing units differ: CJC-1295 / Ipamorelin Stack is dosed in mcg, Tesamorelin in mg — they operate at different scales.
- Frequency: CJC-1295 / Ipamorelin Stack is typically once daily before sleep (or 2–3x daily for more aggressive protocols); Tesamorelin is once daily (subcutaneous).
- Research depth: this profile cites 2 sources for CJC-1295 / Ipamorelin Stack vs 5 for Tesamorelin.
How each works
CJC-1295 / Ipamorelin Stack
CJC-1295 without DAC (Mod GRF 1-29) stimulates GHRH receptors on the pituitary, increasing the amplitude of GH pulses. Ipamorelin independently triggers GH release via the ghrelin receptor (GHS-R1a) with high selectivity — minimal cortisol, prolactin, or aldosterone co-elevation. The combination exploits two separate receptor pathways to produce synergistic GH output. Animal and human studies on each compound individually confirm GH and IGF-1 elevation. The combination is extrapolated from mechanistic research and is the most studied protocol in the peptide research community.
Tesamorelin
Tesamorelin stimulates pulsatile growth hormone (GH) release from the pituitary, raising serum IGF-1 and preferentially reducing visceral adipose tissue (VAT). FDA-registration trials (Falutz et al., NEJM 2007; JAIDS 2010) showed ~15% VAT reduction versus placebo over 26 weeks. Later randomized trials (Stanley et al., JAMA 2014; Lancet HIV 2019) extended the evidence to liver fat, showing meaningful reductions in hepatic fat fraction and attenuated fibrosis progression in HIV-associated NAFLD.
This comparison aggregates public research and structured profile data for informational purposes only. It is not medical advice and does not recommend either compound for human use. Consult a qualified healthcare provider before considering any peptide.