CJC-1295
modified GRF(1-29) · CJC-1295 DAC
A synthetic substance that raises growth hormone. Sold with or without DAC, an add-on that makes it last longer.
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- Type
- Growth hormone signal
- Stage
- Work stopped
- Safety
- Little data
- Risk of fakes
- Medium
- Checked
- Not yet
Safety. Short studies in healthy adults. A 2026 review says very little is known about the safety of peptides like this one in people. Sources: study 1, study 2.
Risk of fakes. Reviews name it among peptides sold outside medical care. We found no tests of what these products contain. Sources: study 1, study 2.
Is it legal
| Where | Status | Checked | |
|---|---|---|---|
| PL | No approval | The European medicines database (EMA) lists no such medicine in Poland (9 October 2026). The Polish register was down, so we could not check it directly. Source | Not yet |
| EU | No approval | The European medicines database (EMA), which covers EU and national approvals, lists no such medicine (9 October 2026). Source | Not yet |
| US | No approval | The FDA drug register has no such medicine. Source | Not yet |
How much research exists
These are search results. A count shows how much exists, not how good the studies are. 1 Nov 2026.
What studies show
- CMuscle mass
Not clear. In studies with random groups in healthy adults, it raised growth hormone and IGF-1, a hormone made in response to it, for several days. Nobody measured muscle or strength.
Reported side effects
What doctors, patients and companies reported to the US medicines agency (FDA), and single cases described in medical journals. A report says what happened to someone after taking the substance. It does not prove the substance caused it, and it does not say how often it happens. Reports do not change any grade.
Reports to the FDA (USA)
- Reports
- 6
- Of these, serious
- 5
| Most often reported | Reports |
|---|---|
| Pain in the upper belly | 1 |
| Sudden kidney damage | 1 |
| Severe allergic reaction | 1 |
| High blood sugar | 1 |
| Low potassium in the blood | 1 |
| Allergic reaction to a medicine | 1 |
| Trouble swallowing | 1 |
| Shortness of breath | 1 |
Serious means the person went to hospital, their life was in danger, they were left with lasting harm, or they died. One report can list several side effects.
Cases described in medical journals
We found no published case of harm.
FDA reports come from openFDA, cases from a PubMed search. The editors have not read these cases yet. Titles stay in the original language. As of 3 Nov 2026.
Studies we have read
| Studies | Kind of study | Who was studied | People | Duration | Dose as studied | Who paid |
|---|---|---|---|---|---|---|
| Prolonged stimulation of growth hormone (GH) and insulin-like growth factor I secretion by CJC-1295, a long-acting analog of GH-releasing hormone, in healthy adults. | Random groups | Healthy adults aged 21-61 | – | 7 wk | – | Unknown |
More papers we found
We found these papers automatically in PubMed. The editors have not read them yet, and they do not affect any grade. Titles stay in the original language.
Short answers
- Does CJC-1295 work?
- A synthetic substance that raises growth hormone. Sold with or without DAC, an add-on that makes it last longer. Muscle mass: grade C, not clear. In studies with random groups in healthy adults, it raised growth hormone and IGF-1, a hormone made in response to it, for several days. Nobody measured muscle or strength.
- Is CJC-1295 legal?
- PL: No approval. The European medicines database (EMA) lists no such medicine in Poland (9 October 2026). The Polish register was down, so we could not check it directly. EU: No approval. The European medicines database (EMA), which covers EU and national approvals, lists no such medicine (9 October 2026). US: No approval. The FDA drug register has no such medicine.
- Is CJC-1295 banned in sport?
- Banned in sport, WADA 2026.
- Is CJC-1295 safe?
- Little data. Short studies in healthy adults. A 2026 review says very little is known about the safety of peptides like this one in people.