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Cjc2.5

CJC-1295

Limited safety

Evidence

Evidence ScoreNot scored

Studies: 8

Meta-analyses: 0

Dosage & timing

Dosage:

No validated human dose for any physique or anti-aging use exists. The phase-1 studies used single or weekly/biweekly subcutaneous doses, with the cleaner GH/IGF-1 responses at 30-60 mcg/kg. Anecdotal grey-market 'DAC' protocols circulate online but have no clinical basis, no efficacy validation, and should not be read as a recommendation.

Best Time:

Any time

Can take on empty stomach

Form:

None — no form has validated human efficacy or an approved standard

What you'll notice

⚠️ No proven human outcome benefitneutral

N/A

📈 GH & IGF-1 elevation (surrogate, human PK studies)positive

Days

🐭 Restored growth in GHRH-deficient mice (animal only)positive

Preclinical

Safety

Limited safety

Contraindications:

Pregnancy and breastfeeding — never studied; avoid entirely
Active cancer or history of cancer — sustained GH/IGF-1 elevation is a theoretical proliferative concern, never evaluated for this peptide in humans
Diabetes / impaired glucose tolerance — GH excess promotes insulin resistance

Drug Interactions:

Insulin / glucose-lowering drugs
Corticosteroids

Side Effects:

Injection-related risks (infection, abscess, contamination from non-sterile 'research-use-only' product)GH-excess effects (fluid retention, joint pain, paresthesia, transient insulin resistance)Injection-site reactions (redness, irritation)

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