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CJC-1295 Side Effects: What Studies and Users Report

What FDA labels and clinical studies report for CJC-1295, how strong that evidence is, and what is still unknown.

Medically reviewed by Juan Pablo Frías, MD · · DisclosureGHRH analogUpdated

Side effects reported in studies

Side effects reported in published studies, strongest design first. Frequencies are quoted as the source gives them; animal results are labelled.

Side effects of CJC-1295 in labels and published studies
Side effectHow commonStudy typeSource
Serious adverse reactions“No serious adverse reactions were reported.”Frequency not statedHuman RCTThe Journal of clinical endocrinology and metabolism 2006, PMID 16352683
Tolerability“was safe and relatively well tolerated, particularly at doses of 30 or 60 microg/kg.”Frequency not statedHuman RCTThe Journal of clinical endocrinology and metabolism 2006, PMID 16352683

What is not known

  • How common each effect is at the doses people use outside of studies.
  • Effects that take longer to appear than the length of the published studies.
  • How CJC-1295 interacts with other medicines and supplements.
  • Whether research-grade products, which are not checked by the FDA, behave like the material used in studies.

When to get medical help

Get urgent care for: trouble breathing, swelling of the face or throat, a widespread rash, severe or lasting stomach pain, fainting, or an injection site that becomes hot, red and spreading.

This is not a complete list. A doctor or pharmacist can help you judge whether a symptom is related.

Common questions

What are the side effects of CJC-1295?

Studies we summarise reported serious adverse reactions, tolerability. The table on this page gives how often each happened and links each source.

Is CJC-1295 safe?

CJC-1295 has an FDA-approved label that lists its known risks. That label covers the approved product used as prescribed, not compounded or research-chemical versions.

Is CJC-1295 banned in sport?

Yes. Prohibited by WADA (S2.2.4). Tested athletes should not use it.

More on CJC-1295

DosageDoses used in published studies, with the source for each.CalculatorVial, water and dose to syringe units.ResultsStudy outcomes and when they were measured.PricePrice per mg and per week from dated listings. No vendor links.Legal statusFDA, compounding and WADA status with dates.How to injectSites, syringe types and hygiene, step by step.

Sources

  1. 1Prolonged 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.The Journal of clinical endocrinology and metabolism · 2006PMID 16352683Accessed 2 Oct 2026

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