Complete Guide

CJC-1295 / Ipamorelin: A Complete Guide to Mechanism, Dosing, and Protocols

Published by Peptara Labs · Updated September 22, 2026 · How we research and check our pages

CJC-1295 / Ipamorelin is a growth-hormone secretagogue blend that prompts your own pituitary to release growth hormone in natural pulses. It is a staple of recovery, sleep, and longevity stacks.

This guide covers how the two peptides work, what the separate human studies of each one used, why there is no studied dose for the blend, the vial math, side effects, what has been studied in combination, contraindications, and storage.

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Section 1

How does CJC-1295 / Ipamorelin work?

Rather than injecting growth hormone directly, this blend signals your own pituitary to release it. The two peptides act on different parts of the same system, which is why they are combined. The result is meant to mimic the natural, rhythmic way the body releases growth hormone, a rhythm whose largest pulse comes during deep sleep.

CJC-1295 (GHRH analog)

CJC-1295 is an analog of growth-hormone-releasing hormone. It raises the baseline amount of growth hormone the pituitary is primed to release, effectively setting a higher floor for the pulse that follows.

Ipamorelin (selective secretagogue)

Ipamorelin triggers a growth-hormone pulse and was selected for this kind of blend because it does so cleanly, with minimal effect on cortisol and prolactin compared with older secretagogues. That selectivity is why the pairing is popular.

Pulsatile release

Together the two produce a pulse that resembles natural growth-hormone secretion rather than a flat, sustained elevation. Preserving the pulsatile pattern is thought to be part of why secretagogues are favored over direct growth-hormone administration for general recovery use.

Section 2

What the research measured, and what it did not

The human research on these two peptides measured hormone levels, not how people feel. After a single injection in healthy adults, a long-acting form of CJC-1295 raised growth hormone 2 to 10-fold for six days or more and IGF-1 1.5 to 3-fold for 9 to 11 days (Teichman et al., 2006).

Ipamorelin, given as a short infusion to healthy men, produced a single growth-hormone pulse that peaked at about 0.67 hours, roughly 40 minutes (Gobburu et al., 1999). In swine it released growth hormone without raising ACTH or cortisol beyond the levels seen after GHRH, even at more than 200 times the amount that gave half its maximum growth-hormone effect (Raun et al., 1998).

Reports of better sleep and recovery are anecdotal, and no trial has measured body-composition change for this blend. It is not a fat-loss drug, and nothing on this page is a promise of any effect.

Section 3

What the research used, and why the blend has no studied dose

No trial has tested CJC-1295 and ipamorelin together, so there is no studied dose for the blend. Each peptide has its own small human record, and neither design was a routine injection of a two-peptide blend.

Peptide and study	Who was studied	How it was given	Half-life reported
CJC-1295 (long-acting form with DAC), Teichman et al., 2006	Healthy adults aged 21 to 61	Subcutaneous injection: single ascending doses in one study, two or three doses one or two weeks apart in a second	5.8 to 8.1 days
Ipamorelin, Gobburu et al., 1999	Healthy men	A 15-minute intravenous infusion at five ascending dose levels	About 2 hours

The CJC-1295 in the human study carried DAC, which binds albumin and is why its effect lasted days. Blends often use the form without DAC, which is shorter-acting, so the study's schedule does not transfer to it. The CJC-1295 ipamorelin dosage page covers the two forms in more detail. None of this is a dose for anyone.

Vial math for a 10mg vial

A 10mg vial of the blend mixed with 2ml of bacteriostatic water holds 5mg of blend per ml. On a U-100 insulin syringe 1ml is 100 units, so each unit holds 0.05mg, or 50mcg, of blend at that strength. That arithmetic reads a label; it is not a dose.

Always measure in units on an insulin syringe, never in mL by eye. See the reconstitution guide for the interactive calculator, and the CJC-1295 ipamorelin price per vial for what a vial costs.

Section 4

Timing: what the studies did and did not test

The published studies did not test a time of day or a fasting rule for this blend. CJC-1295 was studied as single injections and as injections one or two weeks apart (Teichman et al., 2006), and ipamorelin as an intravenous infusion (Gobburu et al., 1999).

Advice about bedtime or fasted injections is reasoning from growth-hormone physiology, not a finding from a trial of the blend, so this page does not set a timing rule. The CJC-1295 ipamorelin half-life page explains how long each peptide lasts.

Timing and schedule are decisions for a licensed clinician. Nothing in this section is an instruction.

Section 5

What are the side effects of CJC-1295 / Ipamorelin?

Commonly reported

Water retention: temporary, reported by some users.
Tingling or flushing: right after an injection, usually brief.
Vivid dreams: reported by some users.
Head-rush or light fatigue: shortly after an injection, transient.

The honest framing on safety

In the human study of CJC-1295, no serious adverse reactions were reported (Teichman et al., 2006). In swine, ipamorelin raised growth hormone without raising cortisol beyond the levels seen after GHRH, which is the selectivity it is known for (Raun et al., 1998). Those are small studies, and the blend itself has no safety trial. Because growth hormone influences glucose handling, anyone with a blood-sugar condition should raise it with a physician first.

Section 6

Stacking: what has and has not been studied

No published study has tested this blend together with another peptide, so this section describes the pairings people ask about rather than recommending one.

CJC-1295 / Ipamorelin + BPC-157

This pairing comes up among people interested in training recovery and in joint or tendon tissue at the same time. BPC-157's evidence is rat and cell research (Drmic et al., 2018; Chang et al., 2014), and no study has tested the two together.

CJC-1295 / Ipamorelin + Tesamorelin

CJC-1295 and tesamorelin are both analogs of growth-hormone-releasing hormone (Teichman et al., 2006; Falutz et al., 2007), so they act on the same receptor. No study has tested them together, and combining two compounds on the same axis is outside anything the research covers.

In a longevity or recomposition stack

CJC-1295 / Ipamorelin also appears in multi-compound research kits and recovery lists. See best peptides for recovery for how it compares.

Section 7

Contraindications and Cautions

Active cancer or a cancer history: growth-hormone-axis stimulation should be discussed with a physician first
Diabetes or blood-sugar disorders: monitor, as growth hormone affects glucose handling
Pregnancy or breastfeeding: avoid, as there is no safety data
Any serious medical condition or prescription regimen: consult your physician before starting

This is a research compound, not an approved treatment. Growth-hormone-axis peptides deserve a conversation with a clinician if you have any endocrine condition.

Section 8

Common Mistakes to Avoid

Assuming the blend was studied. The human data are on CJC-1295 and ipamorelin separately (Teichman et al., 2006; Gobburu et al., 1999), not on the pair, and no trial has set a dose, a time of day or a cycle for it.
Expecting dramatic fat loss. This is not a fat-loss drug, and no trial has measured body-composition change for the blend.
Mixing up the DAC and non-DAC forms. The CJC-1295 in the human study carried DAC, which is why its effect lasted days (Teichman et al., 2006). Forms without it are shorter-acting, so that study's schedule does not transfer.
Measuring in mL by eye. Use an insulin syringe and count units. Eyeballing a fraction of a mL is how large measuring errors happen.
Reconstitution errors. The standard technique uses bacteriostatic water added down the side of the vial, gentle swirling rather than shaking, and refrigeration after mixing.

Section 9

How do you store and reconstitute CJC-1295 / Ipamorelin?

The lyophilized vial is stable at room temperature before reconstitution. Avoid direct sunlight and heat. For longer storage, refrigerate. Do not freeze the lyophilized powder.

Once reconstituted with bacteriostatic water, store refrigerated at 2-8 degrees C and use within about 30 days. Inspect before each draw: the solution should be clear. Discard if cloudy or discolored.

The vial top is wiped with an alcohol swab.
2ml of bacteriostatic water is drawn into a syringe.
The standard technique adds the BAC water slowly down the inside wall of the vial, not directly onto the powder.
The vial is swirled gently, not shaken.
The powder is left to dissolve fully, and the solution should be clear.

See the Peptara reconstitution guide for an interactive calculator and walkthrough.

Section 10

Frequently Asked Questions

Why is this blend linked to sleep?

The body releases its largest natural growth-hormone pulse during deep sleep, which is why growth-hormone secretagogues are often discussed alongside sleep. The human studies behind each peptide did not test the blend or a bedtime schedule: CJC-1295 was given as single injections and as injections one or two weeks apart in healthy adults (Teichman et al., 2006), and ipamorelin as a short infusion in healthy men (Gobburu et al., 1999). This page sets no timing rule for anyone.

What do the two peptides each do?

CJC-1295 is a GHRH analog that raises the baseline level of growth-hormone release. Ipamorelin is a selective growth-hormone secretagogue that triggers a clean pulse with minimal effect on cortisol and prolactin. Used together, they prompt your own pituitary to release growth hormone in a natural, pulsatile pattern rather than injecting growth hormone directly.

How long until I notice results?

No trial has measured results for this blend, so there is no evidence-based timeline. In the human study of CJC-1295, a long-acting form raised growth hormone for six days or more and IGF-1 for 9 to 11 days after a single injection (Teichman et al., 2006), and those are blood markers, not effects a person feels. Timelines for sleep or body composition quoted online are anecdote.

Is Peptara CJC-1295 / Ipamorelin real?

Every vial comes with a third-party Certificate of Analysis confirming 98%+ purity. We source from verified manufacturers and provide lab documentation on request. Message us on WhatsApp before ordering if you want to see a COA first.

How long does one vial last?

The vial holds 10mg of the blend. Reconstituted with 2ml of bacteriostatic water that is 5mg per ml, so any amount converts straight into syringe units. How long it lasts depends entirely on the amount and the frequency, and this site does not work out how many vials a reader needs, because that would require picking a dose. Why there is no studied dose for the blend, and what the separate human studies used, is set out in the section above.

Do I need to refrigerate it?

The lyophilized vial is stable at room temperature before reconstitution. Once reconstituted with bacteriostatic water, store it in the refrigerator (2-8 degrees C) and use within about 30 days. Storage instructions come with every order.

References

Peer-reviewed sources

Raun K, et al. (1998). Ipamorelin, the first selective growth hormone secretagogue. European Journal of Endocrinology. doi.org/10.1530/eje.0.1390552
Teichman SL, et al. (2006). Prolonged 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. Journal of Clinical Endocrinology and Metabolism. doi.org/10.1210/jc.2005-1536
Gobburu JV, Agersø H, Jusko WJ, Ynddal L. (1999). Pharmacokinetic-pharmacodynamic modeling of ipamorelin, a growth hormone releasing peptide, in human volunteers. Pharmaceutical Research. doi.org/10.1023/a:1018955126402
Falutz J, et al. (2007). Metabolic effects of a growth hormone-releasing factor in patients with HIV. New England Journal of Medicine. doi.org/10.1056/NEJMoa072375
Drmic D, Samara M, Vidovic T, et al. (2018). Counteraction of perforated cecum lesions in rats: Effects of pentadecapeptide BPC 157, L-NAME and L-arginine. World Journal of Gastroenterology. doi.org/10.3748/wjg.v24.i48.5462
Chang CH, Tsai WC, Hsu YH, Pang JH. (2014). Pentadecapeptide BPC 157 enhances the growth hormone receptor expression in tendon fibroblasts. Molecules. doi.org/10.3390/molecules191119066

Growth-hormone secretagogues have a research history, but the blend itself has no published trial. This guide summarizes published research. It is not medical advice and not a plan for anyone to follow, and any decision about a research compound belongs with a qualified physician.

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