Put 2 mL of bacteriostatic water into the 5 mg CJC-1295 vial. That makes 2.50 mg/mL. A 200 mcg dose is then 8.0 units on a U-100 syringe.
That volume is the one that lands the draw on a syringe line, so the reading can be checked by eye. More water makes a weaker mix and a bigger draw. Less water makes a stronger mix and a smaller one. The amount of CJC-1295 in the glass never changes. Only the number of marks it takes does.
What matters first
Water to add
2 mL
Resulting strength
2.50 mg/mL
Example 200 mcg dose
8.0 U-100 units
What is CJC-1295?
CJC-1295 is a redesigned copy of the hormone that tells your pituitary to release growth hormone. One version bonds to a protein in your blood, which stretches its life from minutes into days.
Medically reviewed by Jennifer Montecillo, MD · non-practicing medical reviewer·Reviewed 2026-08-12·open the primary sources
How much bacteriostatic water for a 5 mg CJC-1295 vial?
◆ Unique to the 5 mg vialU-100 example draws
Water added
Concentration
Per U-100 unit
Example: 200 mcg =
2 mL
2.50 mg/mL
25 mcg
8.0 units
3 mL
1.67 mg/mL
16.67 mcg
12.0 units
Straight arithmetic: concentration = 5 mg ÷ water, and 1 U-100 unit = 0.01 mL. The example column shows the math at 200 mcg; it is not a dose recommendation.
Which volume to use is a practical choice rather than a dose. Pick the one that puts your draw somewhere you can actually read it on the syringe. The flags in the last column mark where that fails. “Hard to measure” means the draw is too small to judge by eye. “Won’t fit” means it is bigger than one U-100 syringe holds.
The 5 mg vial at 2 mL on a U-100 barrel. 200 mcg fills to 8.0 units, at 2.50 mg/mL.
How many units is a documented dose from this vial?
The table above uses one worked example. These are the published quantities, converted into marks on a U-100 barrel at each water volume for a 5 mg vial. Where a quantity was never studied by injection, the row says so.
1–2 mg — reported, not studied
1–2 mg a week, split over one or two injections of the drug-affinity-complex version, under the skin. The trials gave a single per-kilogram injection and then watched it for nine days, and nothing has tested a milligram quantity repeated weekly.
Water added
Concentration
Draw, low to high
2 mL
2.50 mg/mL
40.0 to 80.0 units
3 mL
1.67 mg/mL
60.0 to 120.0 unitswon’t fit
indirect evidenceDominikowski A, Rękoś Z, Olejarz M, Szczepanek-Parulska E, Domin R, Ruchała M. The emerging landscape of performance-enhancing peptides modulating GH-IGF1 axis: bridging the gap between clinical evidence and patient self-administration. Front Endocrinol 2026 — tabulates self-reported online dosing patterns beside the clinical doses, stating the reported values must not be read as clinically validated, regulatory-approved or safe · retrieved 2026-08-12
Twenty-five doses in a vial nobody can identify
This vial divides into many draws at the worked amount. A more important problem is that two different molecules can be sold under this name at the same vial strength, so the vial label must identify which one it contains.
3Read the full vial record — 3 notes
The strength on the label cannot separate the two
One version carries a chemical arm that binds it to a blood protein and stretches its life from minutes into days. The other does not. They are sold under one name at identical vial strengths.
Everything below is arithmetic on a mass, and mass is exactly the property the two share. No figure this page produces can distinguish them.
Twenty-five draws is a count, not a permission
No published source says how long the mixed solution keeps. A count of twenty-five doses does not establish twenty-five weeks of use.
On the two compounds in this family that do carry a window, most of a vial this size would expire first. The absence of a figure is not evidence that it would not.
Both volumes give whole numbers of units
The reading is clean at either listed volume. That makes the water choice purely a matter of how long you want the mixed vial to cover.
Cleanliness is not confirmation. Every published human amount for this peptide scales with body weight, so the tabled figure corresponds to nothing any study gave anyone.
How do you mix it, step by step?
Wipe both stoppers with an alcohol swab and let them dry.
Draw up the water volume you picked from the table.
Let the water run slowly down the inside wall of the CJC-1295 vial, rather than jetting it onto the powder.
Swirl gently until it dissolves. Shaking damages peptides.
Store it as the dispensing label directs. What happens after mixing differs by product — some labels direct against refrigerating the mixed solution at all.
What if your water volume is not on the table?
The table shows the offered water volumes. The calculator does the same arithmetic for any volume and any syringe, and shows its working line by line.
