Compare · Head-to-head
CJC-1295 vs Retatrutide.
Evidence, risk, regulatory flags, cost, and vendor coverage compared side by side. We don’t sell peptides — we help you choose between them.
Which should you research first?
Start with CJC-1295, then use the table to confirm fit.
CJC-1295 is the cleaner first read based on the current evidence, risk, and regulatory data stored for this pair. The right answer can still change if your goal, sport testing status, vendor constraints, or monitoring tolerance makes the other option a better fit.
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01 · At a glance
| Decision factor | CJC-1295 | Retatrutide |
|---|---|---|
| Primary fit | muscle growth & strength and fat loss & metabolism comparisons | fat loss & metabolism research where you want a clear starting point |
| Evidence | Tier B | Tier C |
| Risk | high | med-high |
| Experience level | intermediate | advanced |
| Budget tier | mid | premium |
| Administration route | subcutaneous | subcutaneous |
02 · Use case & timing
| Decision factor | CJC-1295 | Retatrutide |
|---|---|---|
| Goal fit | Muscle Growth & Strength, Fat Loss & Metabolism, GH Axis Optimization | Fat Loss & Metabolism |
| What users compare it for | Sustained GH and IGF-1 elevation; body composition modulation (long-horizon, not well-established for consumer outcomes). | Preliminary human data suggest strong body-weight reduction and metabolic benefit, but the evidence base remains early-stage. |
| Onset timeline | Biomarker effects persist multiple days; IGF-1 elevations up to ~2 weeks after single dose. | Expected to follow other incretin agents, with early appetite effects and larger changes over months. |
| Main tradeoff | Evidence is stronger than most compounds in this category, but route, side effects, and vendor fit still matter. | Evidence and product availability can still be uneven, so documentation matters more than hype. |
03 · Safety & restrictions
| Decision factor | CJC-1295 | Retatrutide |
|---|---|---|
| Adverse effects | Injection-site reactions, headache, diarrhea, flushing, transient hypotension at higher doses. | Likely significant GI intolerance profile with limited long-term safety clarity. Broader risk remains uncertain due to limited human exposure. |
| Contraindications | GH-axis stimulation risks: glucose intolerance, theoretical neoplasia concerns with elevated IGF-1. | Experimental compound; avoid outside regulated research or clinician-supervised contexts. |
| Interaction notes | Monitor insulin/glucose sensitivity, thyroid axis, and cortisol/prolactin. Trials report no significant cortisol/prolactin/TSH/LH increases at 60 µg/kg single dose. | Assume class-like overlap with GLP-1 and GIP therapies; avoid layering with other incretin agents. |
| Regulatory status | Not approved | Investigational |
| FDA flag | FDA compounding caution | FDA compounding caution |
| WADA status | WADA S2 | Status unclear |
04 · Age & monitoring
| Decision factor | CJC-1295 | Retatrutide |
|---|---|---|
| Supported age ranges | 25-34, 35-44, 45-54 | No age guidance yet |
| Life-stage note | Midlife is where GH-restoration framing is most often used, but evidence and long-term safety remain limited. | Not yet documented |
| Monitoring burden | high | Not specified |
| Follow-up cadence | Reassess at startup and then roughly every few months if continuing. | Not yet documented |
05 · Cost & sourcing
| Decision factor | CJC-1295 | Retatrutide |
|---|---|---|
| Typical cycle cost | $143.98 | $150.00 |
| Estimated monthly cost | $47.99 | $150.00 |
| Cost confidence | High confidence | High confidence |
06 · Before you buy
| Decision factor | CJC-1295 | Retatrutide |
|---|---|---|
| Tracked vendor listings | 3 listings | 2 listings |
| Sourcing note | At least one listing is a blend rather than a clean standalone product, so review the product page carefully. | Tracked product pages exist, but naming differences mean the listing needs an extra read before purchase. |
| Stack-friendly? | Usually stack-friendly | Usually stack-friendly |
Sources and review notes
- Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks - U.S. Food and Drug Administration - accessed 2026-05-15
Used for FDA compounding-risk context and peptide safety flags.
- The Prohibited List - World Anti-Doping Agency - accessed 2026-05-15
Used for athlete-facing WADA risk and peptide-class restrictions.
- Peptide therapeutics: current status and future directions - PubMed / Nature Reviews Drug Discovery - accessed 2026-05-15
Used for broad peptide-therapeutics background and evidence framing.
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