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Protocol Reference
Human trial data

CJC-1295 with DAC protocol

CJC-1295 with DAC (long-acting GHRH analog). Dosing on this page comes from a published human trial or an approved product label, cited below.

Category
Growth Hormone Axis
Common vials
5 mg
Half-life
~6–8 days
Route in the literature
Subcutaneous
Evidence level
Human trial data

How CJC-1295 with DAC works

A GHRH analog carrying a Drug Affinity Complex — a maleimide group that binds covalently to serum albumin after injection. That bond is what stretches the half-life from minutes to days, and it is the entire difference between this and the no-DAC version.

CJC-1295 with DAC dosing schedule

From the phase 1 ascending-dose programme in healthy adults — two randomized, double-blind, placebo-controlled trials enrolling 65 subjects between them. This is dose-ranging pharmacology, not an efficacy protocol for any indication.

PhaseAmountFrequencyNotes
Ascending single doses1, 2, 4, 8, 15, 30 mcg/kgSingle subcutaneous doseThe ascending-dose arms of the phase 1 programme.
Higher single doses30, 60, 90 mcg/kgSingle subcutaneous doseProduced 2–10 fold increases in mean plasma GH for 6+ days and 1.5–3 fold IGF-1 increases lasting 9–11 days.
Repeat dosingWeekly or biweekly2–3 dosesThe second trial in the programme tested multiple dosing.

Study length: Single doses in the first trial; two or three weekly or biweekly doses in the second.

Source for this schedule: Teichman SL et al., "Prolonged stimulation of growth hormone and IGF-I secretion by CJC-1295, a long-acting analog of GH-releasing hormone, in healthy adults", J Clin Endocrinol Metab 2006. This reproduces what was administered in that work. It is reference information about a study, not a recommendation, and the trial population, monitoring and endpoints are part of what made it a protocol.

Reconstitution and measurement

This part is arithmetic and does not depend on the evidence level. Concentration is vial size divided by the bacteriostatic water you add. Draw volume is your target amount divided by that concentration. Units are draw volume times 100, because a U-100 syringe reads 100 units per millilitre. Common vials for CJC-1295 with DAC: 5 mg.

Open the CJC-1295 with DAC calculator → Unit converter

Storage and stability

Dry powder
Cold, dark and dry. Lyophilized peptide is the stable form — keep it that way until you intend to use it.
After reconstitution
Refrigerate at 2–8 °C, protect from light, and plan around a limited window. Do not freeze a reconstituted vial — freeze-thaw damages peptides.
Mixing
Run bacteriostatic water down the inside wall of the vial rather than onto the powder, then swirl. Never shake.
Inspect before use
A clear solution is expected. Cloudiness or particles mean discard, not use.

Full storage guide → · Cloudy solution?

Reported effects

  • The phase 1 programme reported the compound as generally well tolerated at the amounts studied.
  • The long duration of IGF-1 elevation — 9 to 11 days from a single dose — is the defining pharmacological feature and the reason weekly dosing is even plausible.
  • No approved label exists for any indication.

Sourcing CJC-1295 with DAC

Whatever you are working with, the documentation matters more than the price. Ask for a batch certificate of analysis whose lot number matches the vial you actually receive — a COA for a different batch tells you nothing about yours.

CJC-1295 with DAC at Summit Research Supply → Grade a COA first

Summit is the supplier we feature and an affiliate link. Our COA checklist applies the same way to any vendor.

For laboratory research use only. This page documents what the published literature reports about CJC-1295 with DAC. It is not a recommendation, not a treatment plan, and not medical advice. Compounds referenced are sold strictly as research chemicals and are not for human or veterinary use. Some supplier links are affiliate links and may earn us a commission. This never affects tier placement or review conclusions.
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