Peptide Sciences sells CJC-1295 and ipamorelin as research chemicals, not human drugs. See how the pair is studied, dosed, and what US buyers should verify.
CJC-1295 and ipamorelin sold by Peptide Sciences are research chemicals, not FDA-approved drugs for human use. Peptide Sciences lists both peptides as lyophilized powders with third-party certificates of analysis, and most buyers are laboratories studying growth hormone (GH) signaling rather than patients seeking treatment. The two compounds are studied together because they act on different receptors, so their signals add together instead of competing.
What CJC-1295 and Ipamorelin Each Do
CJC-1295 is a synthetic analog of growth hormone-releasing hormone (GHRH). The version most vendors sell carries a drug affinity complex (DAC) that binds albumin in the bloodstream and extended the peptide's half-life to roughly six to eight days in early human trials.
Ipamorelin is a five-amino-acid peptide that activates the ghrelin receptor, also known as GHS-R1a. Animal data suggest it triggers GH release with less effect on cortisol, prolactin, and appetite than older ghrelin mimetics such as GHRP-6.
| Property | CJC-1295 (with DAC) | Ipamorelin |
|---|---|---|
| Peptide class | GHRH analog | Ghrelin receptor agonist |
| Primary receptor | GHRH-R | GHS-R1a |
| Reported half-life | About 6 to 8 days | About 2 hours |
| Form sold | Lyophilized powder | Lyophilized powder |
| FDA status for humans | Not approved | Not approved |
The ipamorelin cjc 1295 peptide combination appears in the literature under several names, including Mod GRF (1-29)/ipamorelin and "GHRH plus ghrelin mimetic." Same mechanism, different label.
Why Researchers Pair Them
Natural GH release depends on two inputs: GHRH from the hypothalamus and ghrelin from the gut. Stimulating both receptors at once produced a larger pulse in animal models than stimulating either one alone.
The DAC version of CJC-1295 provides a long, steady GHRH signal, while ipamorelin produces a short spike. Researchers who care about pulse shape rather than total exposure usually choose Mod GRF (1-29), the short-acting GHRH analog, instead.
Timing shows up in almost every protocol. Dosing in a fasted state or before sleep mimics the body's natural overnight GH pulses, which is why researchers studying cjc 1295 with ipamorelin peptide combinations tend to describe them as pre-sleep or pre-fast tools.
What the Evidence Actually Shows
Human data on this pairing are thin. A small 2006 study in healthy adults found that CJC-1295 raised mean GH and IGF-1 levels, and ipamorelin has been tested mainly in single-dose pharmacokinetic trials and in trials for postoperative ileus — not for body composition or recovery.
Online write-ups of cjc-1295 ipamorelin peptide benefits frequently cite better sleep, faster recovery, and fat loss. Almost all of that support comes from small studies, animal work, or anecdotal reports rather than large randomized controlled trials.
No published trial has compared the combination head-to-head against recombinant GH or placebo over a meaningful duration. Claims that the stack outperforms either peptide alone in humans remain unproven.
Buying from Peptide Sciences: What to Verify
Peptide Sciences is one of several US vendors selling research-grade peptides with a "not for human consumption" label. If you are ordering for laboratory work, check these items before the vial reaches the bench:
- A batch-specific certificate of analysis (COA) showing HPLC purity and mass spectrometry identity results.
- The name of the testing lab and a recent analysis date — a generic, undated sheet proves little.
- Vial labeling that matches the batch number on the COA.
- Cold shipping or ice packs, since heat degrades lyophilized peptides in transit.
- Clear research-use-only labeling, which is what keeps these sales legal in the United States.
Some suppliers sell a cjc 1295 & ipamorelin peptide blend in a single vial. A blend is convenient, but it locks the ratio in place and makes it impossible to study each peptide's separate contribution.
Reconstitution and Research Dosing
Lyophilized peptides are dissolved in bacteriostatic water, usually 0.5 to 1 mL per vial, and swirled rather than shaken to avoid foaming and peptide damage. The table below reflects figures that appear in published research and widely circulated community protocols; none of it is a dosing recommendation for people.
| Compound | Figures cited in research or protocols | Notes |
|---|---|---|
| CJC-1295 with DAC | 30 to 60 mcg/kg in early human trials | Long half-life; studied as a weekly injection |
| Mod GRF (1-29) | 100 to 200 mcg per dose, 2 to 3 times daily | Short-acting GHRH analog |
| Ipamorelin | 100 to 300 mcg per dose in commonly cited protocols | Not established in clinical trials |
| Storage | -20°C lyophilized; 2 to 8°C once reconstituted | Protect from light and repeated freeze-thaw cycles |
When people search for a cjc 1295 ipamorelin peptide dosage, they usually land on forum numbers between 100 mcg and 300 mcg of each peptide per injection, two to three times per day. Those figures vary widely between sources and are not backed by controlled human trials.
Safety and Legal Status in the United States
CJC-1295 and ipamorelin are not FDA-approved for any human indication, and no US pharmacy can dispense them by prescription. Both are sold strictly as research chemicals for laboratory use.
Reported side effects in the limited human literature and in user reports include injection site irritation, headache, flushing, increased hunger, and water retention. Because these peptides raise GH and IGF-1, they also carry the theoretical risks associated with elevated growth hormone, including effects on blood sugar and insulin sensitivity.
Continuous GHRH stimulation has blunted the pituitary's own response in animal models, and the long-acting DAC version of CJC-1295 is far harder to discontinue abruptly than Mod GRF (1-29).
Anyone weighing personal use should speak with a licensed healthcare professional rather than relying on vendor pages or forum threads. Laboratory researchers should confirm that their institution and state allow work with these compounds before ordering.
Frequently Asked Questions
Are CJC-1295 and ipamorelin from Peptide Sciences FDA-approved?
No. Neither CJC-1295 nor ipamorelin is FDA-approved for any human use in the United States. Peptide Sciences sells both as research chemicals labeled "not for human consumption," which is how these peptides can legally be sold to laboratories.
What dosage of CJC-1295 and ipamorelin do studies use?
Early human trials of CJC-1295 with DAC used roughly 30 to 60 mcg per kilogram of body weight, given weekly. Ipamorelin has mainly been studied in single-dose pharmacokinetic trials and in postoperative ileus research, so there is no established human dosing protocol for the combination. Numbers circulating online come from community protocols, not controlled trials.
How should Peptide Sciences vials be stored and reconstituted?
Keep lyophilized vials frozen at about -20°C, protected from light, until you are ready to use them. Reconstitute with bacteriostatic water, swirl gently instead of shaking, and store the dissolved peptide at 2 to 8°C for short-term use. Avoid repeated freeze-thaw cycles, which degrade the peptide.
This page provides educational research information and does not replace medical advice, diagnosis, or treatment.