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HomeResearchCompareCJC-1295 DAC vs MK-677

Peptide Comparison

CJC-1295 DAC vs MK-677

Both are GH / IGF Axis peptides.

CJC-1295 DAC

CJC-1295 with DAC

Fat LossNot EvaluatedResearch Only

Half-life: 6–8 days

1 providers listed

Full CJC-1295 DAC profile →
vs

MK-677

Ibutamoren

PerformanceUnder clinical reviewResearch Only

Half-life: 24 hours

63 providers listed

Full MK-677 profile →
Bottom line

CJC-1295 DAC has a longer half-life than MK-677, so it generally needs less frequent dosing.

Quick Verdict

CJC-1295 DAC

Half-life

6–8 days

MK-677

Half-life

24 hours

Which One Should You Choose?
Your goalBetter option
Stronger clinical evidenceMK-677
Less frequent dosing (longer half-life)CJC-1295 DAC
Oral administration optionMK-677
More provider options (1 vs 63)MK-677

Research summary only — not medical advice. Consult a qualified provider before making any decisions.

Side-by-Side Comparison
CJC-1295 DAC
MK-677
Mechanism Family
GH / IGF Axis
GH / IGF Axis
Half-life
6–8 days
24 hours
FDA Status
not evaluated
Under clinical review
Admin Routes
subcutaneous
oral
Availability
Research Only
Research Only
Providers
1 listed
63 listed
FDA Update
Under clinical review
Avail. Notes
Long-acting GHRH analog with a Drug Affinity Complex (DAC) modification. No FDA approval. Not on the FDA 503A bulks list. WADA-prohibited as a growth hormone releasing factor. Sold as a research chemical only.
Non-peptide ghrelin mimetic. Active IND; Phase 2/3 trials by Merck/Helsinn. Never FDA-approved. FDA enforcement actions against MK-677 supplements as unapproved new drug. Investigational only.
Research Evidence

CJC-1295 DAC

RCT · 1 key study · dated evidence base — most recent 2006

MK-677

RCT · 2 key studies · most recent 2018
Research Citations

About CJC-1295 DAC

CJC-1295 DAC is a GHRH analog carrying a Drug Affinity Complex (DAC) modification that binds covalently to circulating albumin, greatly extending its plasma half-life relative to unmodified or short-acting GHRH analogs. Through this albumin binding it acts as a long-lasting agonist at pituitary GHRH receptors, associated in research with sustained growth hormone and downstream IGF-1 elevation. This contrasts with the non-DAC form (Mod GRF 1-29), whose action is measured in minutes rather than days.

Research Areas
GH and IGF-1 elevation studied in a single-dose human PK trialsustained GHRH-receptor agonism via albumin bindingextended plasma half-life relative to short-acting GHRH analogsbody-composition and GH-axis research contextssubcutaneous administration in published research

About MK-677

MK-677 mimics the action of ghrelin by binding to and activating the GHSR-1a receptor in the pituitary gland, stimulating pulsatile GH release. Its oral bioavailability distinguishes it from peptide-based GH secretagogues and its prolonged half-life results in sustained IGF-1 elevation. Research protocols have explored its effects on lean body mass, bone mineral density, and sleep architecture.

Research Areas
oral GH and IGF-1 stimulation without injectionfat-free mass increase documented in RCTsappetite stimulation via ghrelin receptor agonismsustained IGF-1 elevation — long-duration monitoring relevant
Safety Profile

Information below reflects published research data only — not medical advice. Consult a qualified provider before use.

CJC-1295 DAC

Warnings & Cautions
Active malignancy — caution (GH/IGF-1 is mitogenic)Pregnancy — cautionKnown hypersensitivityGlucose intolerance / insulin resistance

Class-based (investigational)

Suggested Monitoring
IGF-1Fasting glucoseHbA1cInsulin

Research protocols routinely measure IGF-1 to track GH axis activity before and during use. Fasting glucose and insulin are monitored because GH elevation can reduce insulin sensitivity over time.

Regulatory Notes

globalWADA

This compound falls under WADA Prohibited List category S2 (Peptide Hormones, Growth Factors, Related Substances and Mimetics), prohibited at all times for competing athletes.

source

MK-677

Warnings & Cautions
Active malignancy — caution (raises GH/IGF-1)Pregnancy — cautionUncontrolled diabetes / insulin resistance (can raise fasting glucose)Known hypersensitivity

Class-based (investigational)

Price (per mg)

CJC-1295 DAC

$10.63/mg

$9.74$15.25 range

20 vendors

MK-677

Not enough vendor pricing yet.

Find Providers

Where to source these peptides

PeptideBase lists providers for educational research purposes only. Always consult a qualified healthcare professional before obtaining or using any peptide.

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Educational research tools — not medical advice.

Cite this page

Data last updated August 26, 2026

Free to reference and republish with attribution to PeptideBase. Choose a format:

PeptideBase. (2026). CJC-1295 DAC vs MK-677 — Per-mg Price Comparison. Retrieved September 11, 2026, from https://peptidebase.io/peptides/compare/cjc-1295-dac/mk-677

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