CJC-1295 vs YK-11
Overview
CJC-1295 and YK-11 are both performance & growth peptides, but they differ in mechanism, dosing, and regulatory status.
This page compares CJC-1295 and YK-11 across their primary use, typical dosing, reported benefits and side effects, and U.S. regulatory status. For the full monograph on either compound — mechanism of action, clinical research, and references — follow the article links.
Side-by-side comparison
| CJC-1295 | YK-11 | |
|---|---|---|
| Category | Performance & Growth | Performance & Growth |
| Regulatory status (US) | Research use only | Research use only |
| Typical dosage | 1-2 mg | Research protocols |
| Frequency | weekly | varies |
| Reported benefits | Increased muscle mass, fat loss, improved recovery, better sleep, enhanced bone density | Muscle growth beyond genetic limits |
| Reported side effects | Water retention, joint pain, potential insulin resistance with prolonged use | Limited human studies |
Key differences
Primary use. CJC-1295 is categorised under Performance & Growth, while YK-11 falls under Performance & Growth. Because they target a similar goal, they are common alternatives to weigh against each other.
Regulatory status. CJC-1295: not FDA-approved; treated as a research compound. YK-11: not FDA-approved; treated as a research compound.
Dosing. CJC-1295 is typically dosed at 1-2 mg (weekly). YK-11 is typically dosed at Research protocols (varies).
Can you stack them?
Some protocols combine peptides, but stacking CJC-1295 and YK-11 has not been validated for safety or efficacy in controlled trials. Combining compounds can change their effects and risks. Nothing here is medical advice — consult a qualified healthcare provider before starting or combining any protocol.
Frequently asked questions
- What is the difference between CJC-1295 and YK-11?
- CJC-1295 and YK-11 are both performance & growth peptides, but they differ in mechanism, dosing, and regulatory status. CJC-1295 is not FDA-approved; generally classified as a research compound, whereas YK-11 is not FDA-approved; generally classified as a research compound.
- What is CJC-1295 used for?
- Growth hormone, muscle mass, fat loss.
- What is YK-11 used for?
- Myostatin inhibitor.
- Can you take CJC-1295 and YK-11 together?
- Some users combine peptides within a single protocol, but stacking CJC-1295 and YK-11 has not been established as safe or effective in controlled trials. Neither this comparison nor PeptideSciences101 is medical advice — consult a qualified healthcare provider before combining any compounds.
- Is CJC-1295 or YK-11 FDA-approved?
- CJC-1295 is not FDA-approved; generally classified as a research compound. YK-11 is not FDA-approved; generally classified as a research compound.