CJC-1295 Side Effects
Medically reviewed by Dr. Jonathan Snipes, MD
Reviewed for clinical accuracy · Last reviewed July 22, 2026 · Review policy
Quick answer
The most common CJC-1295 side effects are injection-site reactions, and are usually mild and dose-related. Serious effects are less common; the full breakdown and cautions are below.
| Effect | Frequency |
|---|---|
| Injection-site reactions | Common |
| Flushing | Reported |
| Water retention | Reported |
| Headache or tingling | Reported |
CJC-1295's reported side effects are those of increased growth-hormone activity plus local injection reactions: flushing, water retention, headache, and occasional tingling. Its human safety is not well characterized beyond short studies, and research-grade supply adds the usual purity and sterility concerns. As with other GH secretagogues, it is contraindicated in active cancer.
Frequently asked questions
What are the most common CJC-1295 side effects?+
The most common CJC-1295 side effects are injection-site reactions. See the full frequency table above for less common and rare effects.
Is CJC-1295 safe?+
CJC-1295's human safety is not well characterized because it has not completed formal human safety trials. Any use should be through a licensed clinician and a legitimate pharmacy, not research-chemical suppliers.