Dose calculator

CJC-1295 dose calculator

Convert any CJC-1295 dose into syringe units in real time, pre-filled with a 2 mg / 2 mL example.

iPhone · Free to download

Last updated: May 13, 2026

Vial (mg)

Diluent (mL)

Dose (mcg)

Dose unit

Draw on a U-100 syringe

0.01 units

Volume to draw

0.000 mL

CJC-1295 is an injectable peptide people use to nudge the body into producing more of its own growth hormone, usually for recovery, sleep quality, and body composition. It signals the pituitary to release a stronger natural GH pulse rather than adding outside hormone. In a published study, weekly CJC-1295 injections raised average IGF-1 levels by roughly 1.5 to 3-fold over 1–2 weeks. This page covers reconstitution math and typical daily or weekly logging cadence.

How the CJC-1295 dose calculator works

CJC-1295 (without DAC) is dosed daily in the 100-300 mcg range. On a 2 mg vial mixed with 2 mL water (1 mg/mL), a 100 mcg dose draws 10 units. Most GH-secretagogue users stack this with ipamorelin in the same draw.

The formula is volume in mL equals dose mg divided by concentration mg/mL, then volume times one hundred to get units on a U-100 insulin syringe. With a 1 mg/mL CJC-1295 solution and a 0.1 mg dose, the draw is 0.10 mL or about 10 units. Type any other dose and the unit count updates in real time — no spreadsheets, no guesswork.

Inputs that genuinely matter: concentration (which only changes when you reconstitute a new vial) and dose mass. Syringe type matters too, but only because U-100 vs U-40 changes the multiplier — almost every modern insulin syringe is U-100, which is why the math defaults to that. Edge cases worth flagging: switching from mcg to mg without checking the input unit, or carrying yesterday's unit count over to a new vial that was reconstituted with a different volume of BAC water.

Worked example

Walking one CJC-1295 dose through the math

The vial holds 2 mg of CJC-1295, mixed into 2 mL of bacteriostatic water — concentration 1.00 mg/mL.
Your 0.1 mg dose ÷ 1.00 mg/mL = 0.100 mL of solution to pull.
Multiply by 100 (because U-100 means 100 units per mL): 0.100 × 100 = 10 units.
Double the dose to 0.2 mg and the unit count doubles to 20 — the relationship is linear at a fixed concentration.
Change the diluent volume and every one of these numbers moves; change the dose alone and only the last one does.

CJC-1295 titration ladder at this concentration

What different CJC-1295 dose steps draw on a U-100 insulin syringe at the example 1.00 mg/mL concentration.

Dose (mg)	Volume (mL)	Units (U-100)
0.05	0.050	5
0.1	0.100	10
0.2	0.200	20
0.4	0.400	40

Doubling the CJC-1295 dose doubles the unit count. Halving it halves the count. Step-ups under 5 units are hard to read accurately — re-reconstitute with more water if your titration hits that range.

Scenarios people actually run into

Three things that come up logging CJC-1295

You're sitting at the 0.1 mg CJC-1295 step and your prescriber bumps you up. The new dose is double — 20 units instead of 10. Same vial, same syringe, twice the volume on the line.
Your fingers reach for the syringe and the unit count from last week is still in your head. Half the time that number is fine; the other half, the vial changed and the right answer moved. The calculator is the second pair of eyes.
You skipped a week. CJC-1295 cadence is 7 doses per week, and doubling up to "catch up" almost never reads how people expect — log the skip, then log the next normal dose.

Same-category neighbor

CJC-1295 next to Tesamorelin

Both sit in the GH Secretagogue bucket — here's the dose math side by side on each one's example vial.

	CJC-1295	Tesamorelin
Example dose	0.1 mg	1 mg
Concentration	1.00 mg/mL	2.50 mg/mL
Units to draw	10	40

Want the full breakdown? Tesamorelin reference →

How CJC-1295 dosing is tracked

Protocols developed for the no-DAC version (Mod GRF 1-29) are defined by frequent administration due to its rapid clearance. Dosing schedules often involve one to three administrations per day to create distinct pulses of GH release, with a common example dose being 100 mcg per instance, leading to a schedule of 7 or more administrations per week. This variant is almost always paired with a Ghrelin Receptor Agonist (a GHRP like ipamorelin) in the same syringe to amplify the pituitary's response through a secondary receptor pathway.

Conversely, protocols for CJC-1295 with DAC are structured around its long half-life, requiring much less frequent administration. A typical research schedule might involve a single administration once or twice per week, with doses that are correspondingly larger to maintain elevated GH and IGF-1 levels over the interval. The choice between these two protocols is absolute; applying a daily dosing schedule intended for the no-DAC version to the long-acting DAC version would be a significant protocol error, and vice versa.

Divergent study designs directly reflect the profound pharmacokinetic differences between the two CJC-1295 variants. Research protocols involving the no-DAC version, sometimes referred to as Mod GRF 1-29, typically schedule administrations on a daily or even multi-daily basis to account for its very short half-life and maintain stable levels for observation. As a numeric example for personal tracking, a 2 mg vial reconstituted with 2 mL would yield a concentration of 1,000 mcg/mL; a 100 mcg illustrative dose is 0.1 mL or 10 units on a U-100 syringe, logged on a daily cadence (no-DAC variant). In stark contrast, studies observing the DAC variant plan for a much lower administration frequency, often weekly, to align with its long-lasting presence in circulation.

Common CJC-1295 dose-calculation mistakes

Applying a daily dosing frequency appropriate for the no-DAC variant to the long-acting DAC variant.
Applying a daily administration schedule, appropriate for the no-DAC variant, to the DAC-modified version, which is observed in studies with a much longer dosing interval.
Logging a co-administered dose of CJC-1295 (no-DAC) and ipamorelin as a single combined entry, which desynchronizes per-vial inventory tracking.

Frequently asked questions about CJC-1295 dose calculator

How does the CJC-1295 dose calculator turn mg into syringe units?

It runs two divisions in sequence. First it computes concentration (vial mg ÷ diluent mL) — for the example here that's 2 ÷ 2 = 1.00 mg/mL. Then it divides your dose by that concentration to get volume in mL, and multiplies by 100 to convert volume into U-100 syringe units. The output updates as you type so you can sanity-check before drawing. CJC-1295 (without DAC) and CJC-1295 with DAC have very different dosing — the with-DAC variant is typically 2 mg weekly, not daily. Verify your variant.

Does the CJC-1295 dose calculator know which syringe I'm using?

It assumes a U-100 insulin syringe — the most common type for sub-cutaneous peptide injections. U-100 means 100 units per mL. If you're using a U-40 syringe (rare outside veterinary contexts) the unit count is wrong by a factor of 2.5. Tuberculin syringes read in mL directly, so on those just use the volume figure. CJC-1295 (without DAC) and CJC-1295 with DAC have very different dosing — the with-DAC variant is typically 2 mg weekly, not daily. Verify your variant.

Why does the same CJC-1295 dose pull a different unit count today than last week?

Because either the vial or the diluent volume changed. Concentration depends on both. A 5 mg vial reconstituted with 1 mL is twice as concentrated as the same vial with 2 mL — same dose, half the units. Whenever you open a fresh vial, run the dose math again rather than carrying the prior count over. CJC-1295 (without DAC) and CJC-1295 with DAC have very different dosing — the with-DAC variant is typically 2 mg weekly, not daily. Verify your variant.

What if my CJC-1295 dose lands at fewer than 5 units?

That's the calculator telling you the current vial is too concentrated for the dose you want. Five units on a U-100 syringe is hard to read accurately — the markings get tight. Reconstitute the next vial with more bacteriostatic water (commonly 2 mL instead of 1 mL) so each dose covers a larger, cleaner volume. CJC-1295 (without DAC) and CJC-1295 with DAC have very different dosing — the with-DAC variant is typically 2 mg weekly, not daily. Verify your variant.

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