5 mg vial
GHRP-2: a 5 mg vial
What a 5 mg vial of GHRP-2 becomes once it is mixed, and what each dose reported in the sources draws to on a syringe. Every figure is arithmetic on the vial size in the heading — none of it is a recommendation, and the doses are the ones our sources describe rather than ones we picked.
Leading with
5 mg + 5 mL bacteriostatic water = 1 mg/mL
Chosen because it puts the reported doses on readable marks of a 1 mL U-100 syringe. Other volumes are perfectly valid — the dilution table further down covers them, and the concentration changes what every dose draws to.
What each reported dose draws to
At 1 mg/mL, on a 1 mL U-100 syringe. Every row names the source it came from, and a trial protocol and a community convention are not the same kind of information.
| Goal | Dose | Units | Doses in this vial | Source |
|---|---|---|---|---|
| Diagnostic test, the approved useA single dose, once · Subcutaneous | 100 mcg | 10 units | 50 | Clinical trial |
| Repeated dosing, as studiedTwice daily · Subcutaneous | 100 mcg – 200 mcg | 10 units – 20 units | 50 | Clinical trial |
| Commonly described community protocolOne to three times daily · Subcutaneous | 100 mcg – 300 mcg | 10 units – 30 units | 50 | Community practice |
Check every figure against the vial in front of you before drawing. Vials are filled with an overage and labels are not a guarantee. Change any of these numbers in the calculator.
How long a vial lasts
Vials round up, because most of a vial is not a thing you can buy. Only doses with a stated continuous frequency appear here — anything described as a course, a range or “as needed” has no honest weekly rate, so it is left out.
Repeated dosing, as studied
Twice daily
One 5 mg vial holds 25–50 doses at this dose, which is 1.8–3.6 weeks of use.
| Cycle | Doses | 5 mg vials | Syringes | Bacteriostatic water |
|---|---|---|---|---|
| 8 weeks | 112 | 3–5 | 112 | 15 mL – 25 mL |
| 12 weeks | 168 | 4–7 | 168 | 20 mL – 35 mL |
| 16 weeks | 224 | 5–9 | 224 | 25 mL – 45 mL |
Syringes assume one per dose and no wastage. Water assumes each vial is mixed at 5 mL. Neither accounts for a dropped vial, a bent needle or a dose you decide to change, all of which happen.
If you add a different amount of water
The same 5 mg of compound, at four common volumes. More water means a larger, easier-to-measure draw of a weaker solution; less water means the opposite. The amount of compound you inject is identical in every row — only the volume carrying it changes.
| Water added | Concentration | 100 mcg draws to |
|---|---|---|
| 1 mL | 5 mg/mL | 2 units units · 0.02 mL |
| 2 mL | 2.5 mg/mL | 4 units units · 0.04 mL |
| 3 mL | 1.667 mg/mL | 6 units units · 0.06 mL |
| 5 mLshown above | 1 mg/mL | 10 units units · 0.1 mL |
Storage
Before mixing
Refrigerated at 2–8 °C, protected from light.
After mixing
Refrigerated at 2–8 °C. Do not freeze once mixed.
Other vial sizes
The same compound, different arithmetic.
Arithmetic on the vial size named above and the doses our sources report. Nothing here is a recommendation, a protocol or medical advice, and no clinician has reviewed it. Some rows describe community practice, which is not evidence that a dose is safe or effective. Speak to a licensed healthcare provider before acting on any of it.
Sources for the doses above are listed in full on the GHRP-2 profile, each with the trial or label it came from.