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Hexapeptide GHRP

Hexarelin Calculator

Dosage and reconstitution math for Hexarelin. A hexapeptide GHRP that activates both the ghrelin receptor and the CD36 scavenger receptor implicated in cardiovascular pharmacology.

Reconstitution calculator

Pre-filled with common defaults for Hexarelin. Adjust any field to match your own vial.

mg
mL
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units on the syringe
Equivalent volume: mL
Concentration
mcg / mL
Per syringe unit
mcg / unit
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Enter values above to see the step-by-step math.

Preview of the illustrated reconstitution guide
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Free Illustrated Reconstitution Guide (PDF)

8-step visual walkthrough with photos and tips — from gathering supplies to drawing your dose. Educational only — not medical advice.

Hexarelin reconstitution diagram Hexarelin: 5 mg vial mixed with 2 mL bacteriostatic water yields 2.5 mg/mL. A 100 mcg dose draws to 4 units on a U-100 syringe. 1 Reconstitute 5 mg vial + 2 mL BAC water 2 Calculate concentration 2.5 mg/mL 5 mg ÷ 2 mL = 2.5 concentration 3 Convert dose to volume 100 mcg dose 100 mcg ÷ 2500 mcg/mL = 0.04 mL 4 Draw to mark 0 25 50 75 100 4 units U-100 5 mg vial · 2 mL water · 2.5 mg/mL · 100 mcg dose → 0.04 mL → 4 units on U-100

Hexarelin dosage calculator

The Hexarelin dosage calculator above converts a target dose into exact syringe units based on your vial size and how much bacteriostatic water you used to reconstitute it. Hexarelin is commonly sold in 2 mg, 5 mg, 10 mg vials. The calculator supports both U-100 and U-40 insulin syringes and flags draws that are too large for the syringe barrel or too small to measure accurately. A hexapeptide GHRP that activates both the ghrelin receptor and the CD36 scavenger receptor implicated in cardiovascular pharmacology. Enter your target dose in the calculator above to see the exact number of units to draw.

Hexarelin dosage chart

Sample doseConcentrationVolume to drawUnits on U-100
130 mcg2.5 mg/mL0.052 mL5.2
250 mcg2.5 mg/mL0.1 mL10
500 mcg2.5 mg/mL0.2 mL20
1000 mcg2.5 mg/mL0.4 mL40
2000 mcg2.5 mg/mL0.8 mL80

Hexarelin and GHRP peptides

Hexarelin is a Hexapeptide GHRP. A hexapeptide GHRP that activates both the ghrelin receptor and the CD36 scavenger receptor implicated in cardiovascular pharmacology. Other peptides in the GHRP class include Ipamorelin .

Hexarelin is a synthetic hexapeptide in the growth hormone releasing peptide (GHRP) class, structurally related to GHRP-6. Published research has studied its agonism at both the ghrelin / growth hormone secretagogue receptor and at CD36, a scavenger receptor implicated in cardiovascular pharmacology. It has been reported in the literature to produce strong effects on growth hormone release and has been investigated in cardiovascular research contexts. Hexarelin is not approved by the FDA for human use. Research-grade hexarelin is sold only as a laboratory reagent.

See all GHRP peptides →

How to reconstitute Hexarelin

Research vendors typically offer hexarelin in 2 mg, 5 mg, or 10 mg lyophilized vials. Reconstitution with 2–3 mL of bacteriostatic water is commonly reported.

Reconstituting Hexarelin is the same unit-conversion process used for any lyophilized peptide:

  1. Draw your chosen volume of bacteriostatic water into a syringe.
  2. Inject the bacteriostatic water slowly down the side of the Hexarelin vial — do not shoot it directly onto the powder.
  3. Swirl gently until the powder fully dissolves. Do not shake.
  4. Store the reconstituted vial refrigerated.
  5. To dose, calculate your draw volume: divide your target dose by the concentration (vial mg ÷ water mL = mg/mL). The calculator above does this automatically.

For Hexarelin specifically, 2 mg, 5 mg, 10 mg vials are common. A typical reconstitution adds 2 mL of bacteriostatic water, producing a concentration of 2.5 mg/mL for the 5 mg vial size.

Hexarelin half-life and storage

Published pharmacokinetic studies report a plasma half-life of approximately 55 minutes for hexarelin.

Lyophilized hexarelin is typically stored refrigerated. Reconstituted solutions are commonly refrigerated and protected from light.

Common Hexarelin dosing mistakes

Most Hexarelin draw errors are unit errors, not arithmetic errors: confusing mg with mcg (1 mg = 1,000 mcg), or reading a U-40 syringe with U-100 math — the same printed mark holds 2.5× the volume. Two more worth avoiding: leaving the vial unlabeled, so the concentration and reconstitution date are lost, and under-diluting to the point where the draw is under about one unit and can no longer be read accurately.

Each of these is covered in full in the guides: reconstitution math from first principles, U-100 vs U-40 syringes, storage and shelf life, and how to reconstitute peptides.

Hexarelin FAQ

What is Hexarelin? +
Hexarelin is a Hexapeptide GHRP. A hexapeptide GHRP that activates both the ghrelin receptor and the CD36 scavenger receptor implicated in cardiovascular pharmacology.
How do I calculate my Hexarelin dose? +
Use the calculator above. Enter your vial size (2 mg, 5 mg, 10 mg are common for Hexarelin), the amount of bacteriostatic water you added, and your target dose. The calculator returns the exact number of syringe units to draw.
What vial sizes does Hexarelin come in? +
Hexarelin is commonly available in 2 mg, 5 mg, 10 mg vials.
How long does Hexarelin last? +
Hexarelin's reported half-life is ~55 minutes.
How should I store Hexarelin? +
Lyophilized hexarelin is typically stored refrigerated. Reconstituted solutions are commonly refrigerated and protected from light.

Published research on Hexarelin

Indexed in PubMed. Listed for reference only — none of this is dosing guidance, and their presence here is not an endorsement of use.

General resources: PubMed, DailyMed, ClinicalTrials.gov.