CJC-1295 Ipamorelin Dosage Calculator: Blend Vials to Syringe Units
REVIEWED BY
Marcus Reinhardt — Chemical Researcher, Lead Analyst & Peptide Research Advisor
Marcus Reinhardt is a chemical researcher specializing in sustainable materials and advanced formulation science, with research experience in compound development and health optimization. He reviews all Peptide Insider educational content for scientific accuracy, strength of supporting evidence, and practical relevance. Editorial team.
Written by Marcus Reinhardt · Lead Analyst, Peptide Insider · LinkedIn
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Citations verified against PubMed · Published: 2026-09-07 · Last updated: 2026-09-07
CJC-1295 and ipamorelin are two growth-hormone secretagogues, a GHRH analogue and a ghrelin mimetic, most often sold together in a single lyophilized vial labelled with a combined weight such as 10 mg. That combined label is the first trap: a milligram of blend is not a milligram of either compound. This CJC-1295 ipamorelin dosage calculator converts the vial total and the water you add into a concentration, converts an amount you choose into insulin-syringe units, and splits every figure by the label ratio so you can see how much of each peptide a draw actually contains.
WHAT THIS TOOL IS, AND IS NOT
It converts the vial size and water volume you enter into a concentration, and converts an amount you choose into insulin-syringe units. Nothing is pre-filled as a dose and nothing on this page recommends one. Neither compound has a subcutaneous human dosing trial in the form sold in blend vials, and the blend itself has never been studied, so the trial figures below are context only.
How the CJC-1295 / ipamorelin blends math works
Three steps, and every peptide calculator uses the same three. First, concentration: milligrams in the vial divided by millilitres of bacteriostatic water added gives mg/mL. A 10 mg vial with 2 mL of water is 5 mg/mL. Second, what one syringe unit holds: a U-100 insulin syringe has 100 units per millilitre, so one unit is 0.01 mL, and the amount in one unit is the concentration divided by 100 (in mg) or multiplied by 10 (in mcg). At 5 mg/mL, one unit holds 50 mcg. Third, units to draw: the amount you chose, in mcg, divided by the mcg in one unit.
Two practical consequences fall out of that arithmetic. Adding more water lowers the concentration, so any given amount becomes more units and is easier to read on the syringe; adding less water does the opposite and can push an amount below two units, where the markings stop being precise. And the vial’s total content sets a hard ceiling: it does not matter how it is diluted, a 10 mg vial only ever contains 10 mg.
CJC-1295 / Ipamorelin reconstitution chart
The same arithmetic laid out for the total labelled content of a blend vial, at one, two and three millilitres of bacteriostatic water; the per-compound share follows the label ratio, which the calculator above breaks out. “Per unit” is one mark on a U-100 insulin syringe; “per 10 units” is 0.1 mL. These are conversions, not doses.
| Vial | Water added | Concentration | Per unit | Per 10 units |
|---|---|---|---|---|
| 5 mg | 1 mL | 5 mg/mL | 50 mcg | 500 mcg |
| 5 mg | 2 mL | 2.5 mg/mL | 25 mcg | 250 mcg |
| 5 mg | 3 mL | 1.667 mg/mL | 16.67 mcg | 166.7 mcg |
| 10 mg | 1 mL | 10 mg/mL | 100 mcg | 1,000 mcg |
| 10 mg | 2 mL | 5 mg/mL | 50 mcg | 500 mcg |
| 10 mg | 3 mL | 3.333 mg/mL | 33.33 mcg | 333.3 mcg |
Table values are exact arithmetic (mg ÷ mL; mcg per unit = mg/mL × 10). They assume the vial label is accurate, which for research-market products is only established by a batch-matched certificate of analysis.
What has actually been given to humans: CJC-1295 and ipamorelin separately
The blend has never been studied. What exists is a small human record for each component on its own, and in both cases the molecule or the route differs from what is sold in a combined research vial.
| Study | Compound and route | What was given | Result | Source |
|---|---|---|---|---|
| Teichman 2006 (J Clin Endocrinol Metab) | CJC-1295 (the albumin-binding “DAC” form), subcutaneous; healthy adults aged 21–61 in two trials of 28 and 49 days | Four ascending single doses in the first trial; two or three weekly or biweekly doses in the second | GH rose 2- to 10-fold for 6 days or more and IGF-I 1.5- to 3-fold for 9–11 days after one injection; half-life 5.8–8.1 days; no serious adverse reactions; “relatively well tolerated, particularly at doses of 30 or 60 microg/kg” | PMID 16352683 |
| Ionescu & Frohman 2006 (J Clin Endocrinol Metab) | CJC-1295, single injection; healthy men aged 20–40 | 60 or 90 µg/kg | GH pulsatility persisted; no significant difference between the two doses | PMID 17018654 |
| Gobburu 1999 (Pharm Res) | Ipamorelin, intravenous 15-minute infusion; 8 healthy men per level | Five infusion rates from 4.21 to 140.45 nmol/kg | Dose-proportional pharmacokinetics, terminal half-life about 2 hours, a single GH pulse peaking at 0.67 hours | PMID 10496658 |
| Beck 2014 (Int J Colorectal Dis) | Ipamorelin, intravenous; 117 adults after bowel resection | 0.03 mg/kg twice daily for up to 7 days | Well tolerated in a proof-of-concept trial for postoperative ileus | PMID 25331030 |
Three cautions follow. First, the CJC-1295 in those trials is the long-acting form that binds to albumin (“with DAC”), which is why a single injection kept IGF-I elevated for over a week; many blend vials instead contain modified GRF(1-29), marketed as “CJC-1295 no DAC”, a shorter-acting molecule the trials did not test. Second, every human ipamorelin study used intravenous administration; there is no published subcutaneous human trial, so the research-market route has no human pharmacokinetics behind it. Third, the trial figures are per kilogram of body weight and per single compound, so they cannot be read across to a fixed-ratio vial. That is why this page converts what you type and stops there.
Reconstitution notes that change the numbers
Bacteriostatic water, not sterile water, for multi-draw vials. Bacteriostatic water contains 0.9% benzyl alcohol, which is what allows a reconstituted vial to be entered more than once; sterile water has no preservative. Our bacteriostatic water guide covers the label facts.
Volume added is the number that matters, not the vial’s stated capacity. If you add 2 mL, the concentration uses 2 mL regardless of whether the water vial says 10 mL or 30 mL. Measure the water with the same insulin syringe you will draw with, since 100 units is 1 mL.
Lyophilized powder adds a negligible volume. A few milligrams of peptide dissolved in millilitres of water does not change the volume in a way an insulin syringe can resolve, which is why every calculator, including this one, ignores it.
Label accuracy is the biggest error term. A vial labelled 10 mg that assays at 80% of label contains 8 mg of the stated compound, and every number above shifts with it. This is why a recent, batch-matched third-party certificate of analysis is the minimum standard on Peptide Insider, and why we publish how to read one.
Frequently asked questions
Does this calculator recommend a CJC-1295 ipamorelin dose?
No. The amount field stays blank until you type into it. The calculator converts the vial total and water you enter into a concentration, converts an amount you choose into syringe units, and shows how that amount splits between the two compounds by the label ratio. The human studies described on this page tested the compounds separately, mostly intravenously, and are context rather than a recommendation.
How many units is 1 mg of a CJC-1295 ipamorelin blend?
It depends on the concentration. As arithmetic only: a 10 mg blend vial in 2 mL is 5 mg/mL, so 1 mg of blend is 0.2 mL, which is 20 units on a U-100 insulin syringe. In a 5 mg + 5 mg vial that 1 mg of blend is 0.5 mg of CJC-1295 and 0.5 mg of ipamorelin; the calculator shows the split for whatever ratio your label states.
My vial is not a 5 mg / 5 mg split. How do I use the calculator?
Enter the total milligrams on the label in the vial field. The split line under the results assumes the 1:1 ratio used on this page; if your label states a different ratio, scale the per-compound figures accordingly, or read the total-blend numbers, which are correct for any ratio. If the label does not state the split at all, only the certificate of analysis can tell you how much of each peptide is in a draw.
Is CJC-1295 'no DAC' the same as the CJC-1295 in the trials?
No. The published human trials used CJC-1295 with the drug affinity complex, which binds to albumin and gave the compound a half-life of 5.8 to 8.1 days. Modified GRF(1-29), sold as ‘CJC-1295 no DAC’, lacks that modification and acts for a much shorter time. Vendors use the same name for both, so check which one your vial contains.
Has ipamorelin been injected subcutaneously in a human trial?
Not in a published one. The two human studies on record, a pharmacokinetic study in healthy men and a postoperative-ileus trial in surgical patients, both gave ipamorelin intravenously. Subcutaneous use of ipamorelin has no published human data on absorption, timing or safety.
Which syringe size should I select?
The one you actually have. The 30, 50 and 100 options are all U-100 insulin syringes, so one unit is 0.01 mL on each; the setting only changes the capacity ceiling and the drawing. The calculator warns when an amount exceeds the selected syringe or falls below two units, where the markings stop being precise.