How to reconstitute Hexarelin

What the water actually does

Hexarelin ships as a dry powder in a sealed vial. Powder cannot be measured in small fractions with any accuracy, so it is dissolved into a known volume of liquid first. Once dissolved, the vial contents can be measured by volume, which a syringe is built to do.

The water does not change how much peptide is in the vial. A 2 mg vial holds 2 mg whether you add 1 mL or 3 mL. What changes is how much liquid that 2 mg is spread through, and therefore how much liquid carries any given fraction of it. This is the whole of the arithmetic on this page.

Bacteriostatic water is water with a preservative added, which is why it is the standard diluent for a vial that will be entered more than once. This site does not advise on product selection, sterile technique or injection. It computes concentrations only.

Reading the concentration table

The table above lists both vial sizes sold, 2 mg and 5 mg, against the three water volumes commonly used, 1 mL, 2 mL and 3 mL. Three things in it are worth pulling out.

First, doubling the water halves the concentration. A 2 mg vial goes from 2 mg/mL at 1 mL to 1 mg/mL at 2 mL. The 5 mg vial does the same thing, from 5 mg/mL down to 2.5 mg/mL. Nothing about the peptide changes; only the denominator does.

Second, vial size and water volume can cancel each other out. A 2 mg vial in 1 mL and a 5 mg vial in 2 mL are not the same vial, but the second is 2.5 mg/mL and the first is 2 mg/mL, so the volumes needed for the same milligram figure are close. You cannot reason from vial size alone. You have to know the water volume that went in.

Third, 3 mL produces the awkward numbers: 0.67 mg/mL from a 2 mg vial and 1.67 mg/mL from a 5 mg vial. These are rounded thirds. They still work arithmetically, but they do not land on clean syringe marks, which is the practical reason many people choose 1 mL or 2 mL instead.

Turning mg/mL into a syringe reading

Two steps. Divide the dose in milligrams by the concentration in mg/mL. That gives the volume in mL. Then read that volume on the syringe.

A U-100 insulin syringe is graduated in units rather than mL, and its full 1 mL barrel is marked as 100 units. So a volume in mL converts to units by shifting the decimal two places. Half the barrel is half a mL. This is the only conversion involved, and it is the same for every peptide.

The dose amounts that appear in Hexarelin listings are 0.1 mg and 0.2 mg. We list those because they are what vendors print, not because we are endorsing them. Whatever figure you are working from, run it through the same division against the concentration your own vial produced. Do not assume a unit count you read elsewhere applies to your vial, because it was calculated against some other water volume.

What this site does not know about Hexarelin

We hold no reliable human pharmacokinetic data for Hexarelin. That means this site makes no claim about its half life, how long it takes to clear, how it behaves across repeat administration, or how any of that might interact with dose spacing. Pages that state such figures for this compound are stating something we cannot verify.

Hexarelin is not approved by any regulator for human use. There is no approved label, so there is no authoritative dosing document to defer to and no approved reconstitution instruction to follow.

This page has no medical review. It cannot tell you what dose to use, whether Hexarelin is safe, what it does, or what side effects it causes. Those are clinical questions and they need a clinician, not a calculator. What is above is division.

What we do not know

We hold no reliable human pharmacokinetic data for Hexarelin, so this site makes no claims about its half life, how long it takes to clear, or how it accumulates. The arithmetic below concerns concentration and volume only.

This page answers arithmetic and handling questions. It does not tell you what dose to take, what to expect, or whether anything is appropriate for you, and there is no medical review behind it.

Common questions

How much bacteriostatic water should I add to a Hexarelin vial?

There is no correct answer, only consequences. The volumes in common use are 1 mL, 2 mL and 3 mL, and the table shows the concentration each one produces from a 2 mg or 5 mg vial. More water means a larger volume per dose and easier measurement; less water means a smaller injection volume.

What concentration does a 5 mg Hexarelin vial give?

It depends entirely on the water. A 5 mg vial gives 5 mg/mL in 1 mL, 2.5 mg/mL in 2 mL, and 1.67 mg/mL in 3 mL. Record which volume you used, because the vial label will not tell you afterward.

Can I use regular sterile water instead?

Bacteriostatic water is the standard diluent for a vial entered more than once, because it contains a preservative. Plain sterile water does not. This site does not give guidance on sterile technique or product handling, and the choice does not change the concentration arithmetic either way.

How many units is a Hexarelin dose on an insulin syringe?

That cannot be answered without knowing your vial size and how much water you added. Divide the dose in milligrams by your concentration in mg/mL to get the volume in mL, then convert to units using the fact that a U-100 syringe barrel is marked as 100 units to 1 mL.

How long does Hexarelin stay in the body?

We do not know, and we will not estimate. There is no reliable human pharmacokinetic data for Hexarelin that this site is willing to state, so we make no claim about half life, clearance or accumulation.

Does the water volume change how strong the dose is?

No. The vial contains the same amount of peptide regardless of how much water you add. Water volume changes the concentration, and therefore the volume you draw for a given milligram amount, not the milligram amount itself.