CJC-1295 vs IGF-1 LR3.
Quick Verdict
CJC-1295 is a ghrh analog primarily researched for muscle growth, fat loss, recovery, while IGF-1 LR3 is a growth factor studied for muscle growth, recovery, hyperplasia. A key distinction: CJC-1295 has FDA approval status.
Side-by-Side Analysis
| Dimension | CJC-1295 | IGF-1 LR3 |
|---|---|---|
| Category | GHRH Analog | Growth Factor |
| Mechanism | Stimulates prolonged GH and IGF-1 release by mimicking the body's natural GHRH signal to the pituitary gland. | IGF-1 analog with extended half-life for muscle cell hyperplasia (new cell creation, not just hypertrophy). |
| Half-Life | ~7 days | ~20 hours |
| Route | SubQ | SubQ |
| Typical Dose | 1000–1000 mcg | 50–50 mcg |
| Frequency | 3x/week | 5x/wk |
| Evidence Level | Moderate | Preclinical |
| Indexed Studies | 20+ indexed | 20+ indexed |
| FDA Status | Approved | Research Only |
| Lowest Price | $59.99 / 10mg via Amino Club | $69.99 / 1mg via Amino Club |
| Per-mg Cost | $6.00/mg | $69.99/mg |
Mechanism of Action Comparison
How CJC-1295 Works
CJC-1295 CJC-1295 is a synthetic growth-hormone-releasing hormone analog studied for its ability to sustainably elevate GH and IGF-1, supporting muscle growth and fat loss.
Stimulates prolonged GH and IGF-1 release by mimicking the body's natural GHRH signal to the pituitary gland. Preserves natural pulsatile GH release pattern.
How IGF-1 LR3 Works
IGF-1 LR3 IGF-1 LR3 is a long-acting analog of Insulin-like Growth Factor 1 studied for its ability to trigger new muscle cell creation (hyperplasia) beyond what training alone can achieve.
IGF-1 analog with extended half-life for muscle cell hyperplasia (new cell creation, not just hypertrophy). Promotes nitrogen retention and protein synthesis.
Key Mechanistic Difference
CJC-1295 operates as a ghrh analog, while IGF-1 LR3 functions as a growth factor — these are fundamentally different pharmacological approaches. CJC-1295 has a significantly longer half-life (~7 days) compared to IGF-1 LR3 (~20 hours), which impacts dosing frequency and sustained activity.
Research Evidence
CJC-1295
20 studies- CJC-1295 GH/IGF-1 elevation in humansTeichman et al. (J. Clin. Endocrinol. Metab.): Single injection increases GH 2-10x for 6+ days and IGF-1 1.5-3x for 9-11…Moderate
- CJC-1295 preserves pulsatile GH secretion in humansIonescu & Bhatt (J. Clin. Endocrinol. Metab.): Demonstrates 7.5-fold increase in basal GH, 46% increase in mean GH, and …Moderate
- Long-acting GHRH analogs increase pituitary GH mRNAAnimal study shows CJC-1295 increases total pituitary RNA and GH mRNA, suggesting proliferation of somatotroph cells for…Preclinical
IGF-1 LR3
20 studies- IGF-1 LR3 promotes muscle growth in animal modelsIGF-1 LR3 demonstrates significantly enhanced potency over native IGF-1 due to reduced binding protein affinity and exte…Preclinical
- IGF-1 signaling: muscle repair and regeneration reviewPhilippou & Barton (Growth Hormone & IGF Res.): Comprehensive review of IGF-1's role in muscle satellite cell activation…Preclinical
- IGF-1 and cancer risk comprehensive epidemiological reviewBowers et al.: Meta-analysis of epidemiological studies examining positive correlation between circulating IGF-1 levels …Moderate-Strong
Vendor Pricing
· Affiliate links · Prices verified 2026CJC-1295
1 vendorIGF-1 LR3
1 vendorAffiliate disclosure: PeptiDex may earn a commission from purchases via vendor links at no extra cost to you. See our methodology.
Frequently Asked Questions
Can I take CJC-1295 and IGF-1 LR3 together?▼
Yes — CJC-1295 and IGF-1 LR3 are identified as synergistic in interaction databases. They operate through complementary mechanisms and are commonly combined in research protocols.
Which has more research evidence — CJC-1295 or IGF-1 LR3?▼
CJC-1295 has 20 indexed studies (highest evidence: Moderate). IGF-1 LR3 has 20 indexed studies (highest evidence: Preclinical). Both have comparable research coverage.
What is the price difference between CJC-1295 and IGF-1 LR3?▼
At current verified vendor prices, CJC-1295 starts at $6.00/mg while IGF-1 LR3 starts at $69.99/mg. Prices vary by vendor and vial size — see the full vendor comparison below.
Which is better for muscle growth — CJC-1295 or IGF-1 LR3?▼
Both are researched for muscle growth. CJC-1295 addresses this via muscle growth, fat loss, recovery. IGF-1 LR3 approaches it through muscle growth, recovery, hyperplasia. The optimal choice depends on your specific research protocol and which mechanism aligns with your objectives.
Is CJC-1295 or IGF-1 LR3 FDA-approved?▼
CJC-1295 has FDA approval (or is derived from an FDA-approved compound). IGF-1 LR3 is a research compound without FDA approval for human use. FDA status reflects regulatory evaluation — not necessarily superiority for all research applications.
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Research Use Only — Not Medical Advice
This comparison is provided for educational and research purposes only. It does not constitute medical, prescribing, or treatment advice. Clinical data cited here is sourced from published peer-reviewed trials and FDA labels. Consult a qualified healthcare professional before making any decisions about medications or research compounds. PeptiDex is an informational resource and does not sell pharmaceutical products.