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GHRP-2 5 mg vial: mixing and syringe units
A 5 mg vial of GHRP-2 mixed with 3 mL of bacteriostatic water is 1.6667 mg/mL. At that strength 100 mcg is 6 units on a U-100 syringe and 300 mcg is 18 units. The doses on this page are a reported range, not a label dose.
5 mg vial
Water 3 mL
Concentration 1.6667 mg/mL
US Not approved
Canada Not authorized
Checked 10 Oct 2026GHRP-2 5 mg draw chart
Each row is one dose, the volume to draw and where that sits on a U-100 insulin syringe. The last three columns show which syringe sizes can hold it in one draw.
| Dose | Volume | Syringe units | 0.3 mL syringe | 0.5 mL syringe | 1 mL syringe |
|---|---|---|---|---|---|
| 100 mcg | 0.06 mL | 6 units | Yes | Yes | Yes |
| 200 mcg | 0.12 mL | 12 units | Yes | Yes | Yes |
| 300 mcg | 0.18 mL | 18 units | Yes | Yes | Yes |
Source Reported range, not a label dose. Human studies gave a single 100 mcg dose into a vein as a pituitary test, 1 to 2 mcg/kg into a vein, or a continuous infusion under the skin; no published human study of repeated injections under the skin at these doses was found. Not approved in the US or Canada. Vial math is arithmetic.
How to mix a 5 mg GHRP-2 vial
- Wash your hands. Wipe the stopper of the GHRP-2 vial and the water vial with an alcohol swab.
- Draw 3 mL of bacteriostatic water into a syringe.
- Push the needle through the stopper of the peptide vial and let the water run slowly down the glass, not straight onto the powder.
- Swirl the vial gently until the powder is gone. Do not shake it.
- Write the date and 1.6667 mg/mL on the vial, then put it in the fridge.
If you add a different amount of water
More water makes each dose a bigger, easier draw. Less water makes it smaller. The milligrams in the vial do not change.
| Water added | Concentration | 100 mcg | 200 mcg | 300 mcg |
|---|---|---|---|---|
| 1 mL | 5 mg/mL | 2 units | 4 units | 6 units |
| 2 mL | 2.5 mg/mL | 4 units | 8 units | 12 units |
| 3 mL | 1.6667 mg/mL | 6 units | 12 units | 18 units |
The marked row is the amount used in the chart above. Red cells are draws under 5 units, which are hard to read, or over 100 units, which one 1 mL syringe cannot hold.
How many doses are in the vial
| Dose | Whole doses in a 5 mg vial |
|---|---|
| 100 mcg | 50 doses |
| 200 mcg | 25 doses |
| 300 mcg | 16 doses |
How long the vial lasts depends on how often it is used. The reported frequency for GHRP-2 is: one to three times daily.
GHRP-2 5 mg vial questions
How many units is 100 mcg of GHRP-2 from a 5 mg vial?
With 3 mL of bacteriostatic water the vial is 1.6667 mg/mL. 100 mcg is 0.06 mL, which is 6 units on a U-100 syringe.
How many units is 200 mcg of GHRP-2 from a 5 mg vial?
With 3 mL of bacteriostatic water the vial is 1.6667 mg/mL. 200 mcg is 0.12 mL, which is 12 units on a U-100 syringe.
How many units is 300 mcg of GHRP-2 from a 5 mg vial?
With 3 mL of bacteriostatic water the vial is 1.6667 mg/mL. 300 mcg is 0.18 mL, which is 18 units on a U-100 syringe.
How much bacteriostatic water goes in a 5 mg GHRP-2 vial?
3 mL is the amount used on this page. It gives 1.6667 mg/mL and puts the doses at 6, 12, 18 units. Any amount works as long as the math is redone for it.
What if I added 1 mL instead of 3 mL?
The vial would be 5 mg/mL instead of 1.6667 mg/mL, so 100 mcg would be 2 units instead of 6. The dose in the syringe is the same; only the volume changes.
How many doses are in a 5 mg GHRP-2 vial?
Whole doses in one vial: 50 at 100 mcg, 25 at 200 mcg, 16 at 300 mcg.
More on GHRP-2
This page is only the math for one vial size. Where the doses come from, what the studies found, the side effects and the sources are on the main page.
GHRP-2 dosageWhat GHRP-2 isHow to mix a vialHow to read a syringe
DosageFacts is an information site. It is not medical advice. Talk to a licensed professional before using any medication.