How to reconstitute Hexarelin 5 mg

In this example, 1 mL of bacteriostatic water in a 5 mg Hexarelin vial gives 5.00 mg/mL. An example 100 mcg amount is then 2.0 units on a U-100 syringe.

This example lands on a syringe line. More water makes a weaker mix and a bigger draw. Less water makes a stronger mix and a smaller one. The amount of Hexarelin stays the same. Use the diluent and volume specified for your product; the arithmetic alone does not choose them.

What matters first

Example water volume: 1 mL
Resulting strength: 5.00 mg/mL
Example 100 mcg dose: 2.0 U-100 units

How much bacteriostatic water for a 5 mg Hexarelin vial?

◆ Unique to the 5 mg vialU-100 example draws

Water added	Concentration	Per U-100 unit	Example: 100 mcg =
1 mL	5.00 mg/mL	50 mcg	2.0 units
2 mL	2.50 mg/mL	25 mcg	4.0 units

Straight arithmetic: concentration = 5 mg ÷ liquid volume, and 1 U-100 unit = 0.01 mL. The example column shows the math at 100 mcg; it is not a dose recommendation.

The table compares possible concentrations; it does not establish which diluent or volume suits your product. Follow its dispensing instructions.

“Hard to measure” means the example draw is below two U-100 units. “Won’t fit” means it exceeds this syringe’s capacity.

Hexarelin 5 mg vial: example mixing volumes. Each row is what that amount draws on a U-100 syringe. 1 mL makes 5.00 mg/mL, or 50 mcg a unit, and 100 mcg is 2 units. 2 mL makes 2.50 mg/mL, or 25 mcg a unit, and 100 mcg is 4 units. The barrel drawn here is filled to 2 units, the draw at 1 mL. The sum is 5 mg divided by the liquid volume. One U-100 unit is 0.01 mL. — The 5 mg vial at 1 mL on a U-100 barrel. 100 mcg fills to 2.0 units, at 5.00 mg/mL.

Medically reviewed by Kenneth Montecillo, MD2026-09-07open the primary sources

What is Hexarelin?

Hexarelin is a peptide six amino acids long, built in the early 1990s to trigger a growth-hormone pulse.

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 listed liquid volume for a 5 mg vial. Where a quantity was never studied by injection, the row says so.

100–200 mcg — reported, not studied

100–200 mcg once or twice a day, continued for weeks at a time, under the skin. The one study that dosed anyone for 16 weeks watched the growth-hormone response fall by nearly half over that period.

Water added	Concentration	Draw, low to high
1 mL	5.00 mg/mL	2.0 to 4.0 units
2 mL	2.50 mg/mL	4.0 to 8.0 units

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

Fifty draws, and the smallest readings on any page here

The larger hexarelin vial contains fifty worked doses, producing draws of two or four units. These are the smallest draws among the reconstitution guides.

3Read the full vial record — 3 notes

Two units makes a one-line difference substantial

At the smaller listed volume the plunger stops at two units, where one graduation is half the dose. Both readings land on illustrated marks, but the fraction represented by one unit remains large.

Landing on a line does not establish the measurement accuracy of the equipment in use. The small result needs to be checked against the actual syringe and the instructions for that preparation.

Compare the draw at the smaller vial strength

Increasing the vial strength while keeping the liquid volume and dose unchanged reduces the draw. Here the larger vial produces a shorter reading than the smaller one at either displayed volume.

Neither displayed row produces a large reading. That is a limit of these examples, not a recommendation to buy another vial or choose a different dilution without product-specific instructions.

Fifty draws is not a plan

The number is only a dose count. No product-specific use-by date is supplied with these inputs.

A count of fifty portions is not the duration of the cited human course. Matching it to that study would require the same dose and frequency, and would still not establish stability for a separately prepared product.

How do you mix it, step by step?

Wipe both stoppers with an alcohol swab and let them dry.
Check the product’s mixing instructions for the correct diluent and volume before drawing it up.
Let the water run slowly down the inside wall of the Hexarelin vial, rather than jetting it onto the powder.
Follow the product’s instructions for mixing and checking the solution before use. Do not assume every powder uses the same method.
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 calculator lets you enter your product’s vial strength and mixing volume, then shows the arithmetic for your syringe.

Open the Hexarelin calculator →

Where to read next about Hexarelin

The arithmetic on this page is only half the question. These are the pages that carry the other half.

Hexarelin research, dosing, and approval status

No regulator has approved hexarelin; the guide separates human studies from reported use.

Every calculator on this site, hexarelin and the rest

Every intermediate value is printed, for hexarelin or any other vial.

Find mixing guides for hexarelin

Find vial-specific mixing tables as you explore hexarelin.

Hexarelin in the regulatory changelog

A proceeding with no published outcome is entered as exactly that, including hexarelin

4primary sources, each with the day we read it — open the documents used on this page