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CJC-1295 half-life

CJC-1295 has an elimination half-life of approximately 30 hours. Here is what that means for how long a single dose stays in your system.

100%50%25%12.5%1.32.53.850days after a single dose
Simple single‑compartment elimination model ((1/2)t/t½): it ignores absorption, route, and individual variation, so treat it as a shape, not a measurement. In the Peptilot app this curve is stacked across your actual logged doses.

Clearance milestones

MilestoneTime after a single dose
50% eliminated~30 h
75% eliminated~2.5 days
90% eliminated~4.2 days
~97% eliminated (≈5 half-lives)~6.3 days

About CJC-1295

CJC-1295 is a synthetic growth-hormone-releasing hormone (GHRH) analog studied for stimulating growth-hormone release. It exists in forms with and without DAC (Drug Affinity Complex), which substantially changes its duration of action; the DAC form is much longer-acting. It is widely regarded as a research peptide and this entry is informational, not a recommendation to use the compound.

See the full CJC-1295 compound page or the CJC-1295 reconstitution calculator, or compare against other compounds on the half-life overview.

Questions, answered.

What is CJC-1295's half-life?
CJC-1295's elimination half-life is approximately 30 hours, based on published pharmacokinetic data. That means about half of a dose is eliminated in that time, half of the remainder in the next interval, and so on.
How long does CJC-1295 stay in your system?
Using the ~5-half-lives rule of thumb, a single dose of CJC-1295 is roughly 97% eliminated after ~6.3 days. Actual clearance varies with dose history, route, and individual metabolism — treat this as an educational estimate, not a measurement.
Do levels build up with repeated doses?
Yes — if a new dose lands before the previous one is eliminated, the remainders stack. With consistent dosing, estimated levels reach steady state after roughly four to five half-lives. Peptilot's Levels feature stacks this exact curve across your logged doses so you can see the estimate for your own history.

Educational information for people who track their protocols — not medical advice, and never a recommendation to use any compound. Always work with a qualified healthcare provider.

Peptilot charts your estimated CJC-1295 levels from the doses you actually log — in any browser, free for your first 3 days.

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