Vial duration

CJC-1295 vial duration calculator

Estimate how many weeks one 2 mg CJC-1295 vial covers at your dose and weekly cadence.

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Last updated: May 13, 2026

Vial (mg)

Dose (mg)

Doses / week

Total doses

Lasts

2.9 weeks

CJC-1295 weeks-of-supply at common cadences

How long one 2 mg CJC-1295 vial covers at a 0.1 mg per dose, for three weekly cadences. Total doses per vial: 20.

Doses per week	Total doses per vial	Weeks of supply
6	20	3.3
7	20	2.9
8	20	2.5

Math weeks-of-supply assumes every dose draws cleanly. Stability typically caps a reconstituted vial at 4–6 weeks of refrigerated use regardless of how much liquid remains.

Worked example

How long one CJC-1295 vial lasts, the long version

Total doses in the vial: floor(2 ÷ 0.1) = 20. The floor matters — a partial dose at the bottom doesn't count.
Cadence: 7 doses per week for CJC-1295 at this example step.
Math weeks-of-supply: 20 ÷ 7 = 2.9 weeks of liquid in the vial.
Stability ceiling: most reconstituted peptides are typically used within 4–6 weeks of refrigerated storage. Whichever number is smaller is the one that binds your refill date.
Doubling the dose roughly halves both numbers — and titration usually closes the gap between "math weeks" and "stability weeks" without you noticing.

Scenarios people actually run into

Three things that come up logging CJC-1295

Math says one 2 mg CJC-1295 vial covers 2.9 weeks at 0.1 mg per dose. Stability typically caps a reconstituted vial at 4–6 weeks. Whichever number is smaller is the date on your refill calendar.
Titration up doubles the dose and halves the vial. A 12-week-on-paper vial becomes a 6-week vial the day you step up — order the next vial the same day you take the step.
Shipping windows are the silent third constraint. If your supplier runs 1–3 weeks, the refill order has to leave at least that long before "math weeks" or "stability weeks," whichever is binding.

Same-category neighbor

CJC-1295 next to GHRP-6

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

	CJC-1295	GHRP-6
Vial	2 mg	5 mg
Cadence	7/wk	7/wk
Weeks of supply	2.9	7.1

Want the full breakdown? GHRP-6 reference →

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.

Planning CJC-1295 vials in real life

CJC-1295 (no DAC) vial planning is one of the cleanest in the GH-secretagogue family. A 2 mg vial covers 20 daily doses at 100 mcg, which works out to exactly 4 weeks at a 5-on/2-off cadence — one vial per month, finished right at the stability ceiling. That's why 2 mg is the default vial size: the math just works.

Step up to 200 mcg and the vial covers 2 weeks. Stack with ipamorelin in the same draw and you'll burn through both vials at the same rate. Most users running a CJC-1295 + ipamorelin protocol order both peptides in matched quantities — 2 vials of each per month at the 100 mcg step, 4 of each at the 200 mcg step.

Storage and shelf life for CJC-1295

Before it is reconstituted, the freeze-dried powder should be stored at refrigerated temperatures. After the peptide is dissolved with a diluent, the resulting solution's chemical structure is maintained by continuous refrigeration. Researchers typically plan to complete their study of a single reconstituted vial within a 30-day timeframe.

How the CJC-1295 vial duration calculator works

A 2 mg CJC-1295 vial covers 20 daily doses at 100 mcg — about 4 weeks at the common 5-on/2-off cadence. At 200 mcg that drops to 2 weeks. Plan 1 vial per month if you're at the starter dose, 2 if you've stepped up.

The formula is two divisions. Total doses per vial equals vial mg divided by dose mg, rounded down. Weeks of supply equals total doses divided by doses per week. With a 2 mg vial of CJC-1295, a 0.1 mg dose, and 7 dose per week, the vial covers 20 doses, or about 2.9 weeks of supply.

The three inputs that move the answer: vial mg (set when you bought the vial), dose mg (set by your protocol step), and doses-per-week (set by the peptide's half-life). Once a vial is reconstituted it also has a stability ceiling — most lyophilized peptides reconstituted in BAC water are typically used within four to six weeks of refrigerated storage, so a vial that mathematically lasts twelve weeks may not last twelve weeks in practice.

Common CJC-1295 vial-planning mistakes

Logging a co-administered dose of CJC-1295 (no-DAC) and ipamorelin as a single combined entry, which desynchronizes per-vial inventory tracking.
Assuming all research vials labeled 'CJC-1295' are identical, without first confirming the presence or absence of the Drug Affinity Complex (DAC).

Frequently asked questions about CJC-1295 vial duration

How does the CJC-1295 vial duration calculator estimate weeks of supply?

It floors total doses (vial mg ÷ dose mg) then divides by doses per week. For this CJC-1295 example — a 2 mg vial, 0.1 mg per dose, 7 dose/week — that's floor(2 ÷ 0.1) ÷ 7 = about 2.9 weeks. Flooring matters: a partial dose left in the vial doesn't count. CJC-1295 daily protocols line up with the 4-week stability window almost perfectly at the 100 mcg dose.

Should I plan refills around the math, or around stability?

Whichever runs out first. Math says CJC-1295 at the example dose lasts the calendar weeks shown above. Stability says most reconstituted peptides are typically used within 4–6 weeks of refrigerated storage regardless of how much liquid is left. If the math says 12 weeks but stability caps at 5, plan around 5 — and reconstitute the next vial with less water so you finish it in the stability window. CJC-1295 daily protocols line up with the 4-week stability window almost perfectly at the 100 mcg dose.

Does titrating the CJC-1295 dose up shorten vial life?

Yes, often dramatically. Doubling the dose halves the doses-per-vial. The calculator shows real-time how a step-up changes the weeks-of-supply line, so you can re-time refill orders before a titration event rather than discovering the gap mid-protocol. CJC-1295 daily protocols line up with the 4-week stability window almost perfectly at the 100 mcg dose.

What if I take CJC-1295 less often than the default cadence here?

Drop the doses-per-week field. With 7 dose/week the example vial lasts about 2.9 weeks; halving the cadence roughly doubles that, but you'll hit the stability ceiling first. A vial that mathematically covers 16 weeks rarely covers 16 weeks in practice. CJC-1295 daily protocols line up with the 4-week stability window almost perfectly at the 100 mcg dose.

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