Reviewed by the PeptideMind Team · Updated July 15, 2026

Hexarelin Dosage Guide, Benefits & Side Effects

Hexarelin produces one of the strongest GH pulses among secretagogues, plus independent cardioprotective effects on heart tissue. See research.

Chemical Makeup

6

Amino Acids

Hexarelin

His

H

Position 1

?

X

Position 2

Ala

A

Position 3

Trp

W

Position 4

Phe

F

Position 5

Lys

K

Position 6

Amino acid sequence
HistidinePosition 1
?Position 2
AlaninePosition 3
TryptophanPosition 4
PhenylalaninePosition 5
LysinePosition 6

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Hexarelin Dosage Guide for Muscle Growth

Hexarelin triggers a strong release of growth hormone, but the body gets used to it quickly, so its effects can fade with regular use. It's given as an injection under the skin.

Vial size

2 mg

Bacteriostatic water

2 mL

Dosing

100 mcg

Frequency

1–2× daily

Cycle

4 weeks on / 4 off

Benefit

Muscle Growth

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What is Hexarelin?

Hexarelin is one of the strongest peptides available for triggering natural growth hormone release, working through the same pathway as the 'hunger hormone' ghrelin. Beyond its effect on growth hormone, it also appears to have a direct protective effect on heart tissue. It has been tested in human trials for growth disorders in children and is widely studied for hormone optimization, heart protection, and body composition.

Growth

hex

Growth

Is Hexarelin FDA approved?

Hexarelin is not an FDA-approved drug. It is intended for research purposes only and is not approved for human consumption, diagnostic, or therapeutic use.

Research Use Only

Hexarelin has not been evaluated by the FDA for safety or efficacy in humans.

No Clinical Oversight

Not manufactured under FDA-regulated quality or clinical standards.

Unregulated Sourcing

Purity, dosing, and sourcing are not verified through FDA testing or oversight.

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How Does Hexarelin Work?

It binds the same 'hunger hormone' receptor as ghrelin, triggering a strong pulse of growth hormone release from the pituitary. It also attaches separately to a receptor found in heart tissue, giving it a protective effect on the heart that's unrelated to its growth hormone activity.

Mimics ghrelin

Binds the same receptor as ghrelin to trigger growth hormone release.

Strong pulse

Produces a particularly strong pulse of growth hormone from the pituitary.

Protects the heart

Separately binds a heart-tissue receptor for an unrelated protective effect.

Hexarelin Targeted areas

How to reconstitute Hexarelin

View guide

The materials you'll need and step-by-step instructions for safely mixing Hexarelin with bacteriostatic water.

Materials needed

Your Hexarelin vial (lyophilized)

Alcohol swabs

Bacteriostatic sterile water

3 mL syringes (Luer Lock tip)

25G or 27G needles (Luer Lock). Other gauges may also be acceptable.

Sharps container (optional)

1

Remove the caps

Remove the caps from both your Hexarelin vial and your bacteriostatic water vial.
2

Sanitize the rubber stoppers

Wipe down the rubber stoppers on both vials with alcohol swabs and let them dry for about 3 minutes.
3

Attach the needle

Take your 3 mL syringe and needle. Twist the needle's plastic hub into the Luer Lock tip on the syringe to secure it.
4

Draw the bac water

Pull back on the plunger to draw your desired volume of bacteriostatic water. If you overfill, just push the excess back in until you reach the right marker on the syringe.

How much bac water? Hexarelin typically comes in a 2 mg vial. We recommend 2 mL of bacteriostatic water, though anywhere between 1 mL and 3 mL is acceptable. For larger vials you can use up to 5 mL — more bac water makes microdosing easier, but insulin needles usually max out at 1 mL per injection. That means a lot of bac water might force you into multiple injections to hit your target dose. Unless you're microdosing, 2 mL per vial is a solid rule of thumb.
5

Insert the needle into the Hexarelin vial

With the bac water in your syringe, insert the needle into the Hexarelin vial at a slight angle to avoid pressure buildup.

Use a thin needle: Stick to 25G or higher to avoid damaging the rubber stopper. Higher gauge means a thinner needle.
6

Release the water gently

Let the water run gently down the side of the vial. Don't inject it forcefully.

Heads up: Sometimes the plunger pushes itself in as soon as the needle enters the vial. Hold the plunger back so you have full control over how fast the bac water enters.
7

Swirl to dissolve

Avoid shaking. Gently swirl, flip, and roll the vial to dissolve the powder.

Be patient: This usually takes 2 to 5 minutes of consistent swirling, mixing in a circular motion, and gently flipping the vial up and down. The water needs to run through the powder many times to fully dissolve it. Don't shake or get aggressive with it.
8

Check for full dissolution

The solution should be clear with no visible particles. If it's cloudy or clumpy, wait a minute and repeat the swirling step.
9

Cap, dispose, and store

Once you're done, cap the needle and dispose of it (ideally in a sharps container). Store the reconstituted Hexarelin vial in the fridge whenever it's not in use. It will stay good for approximately 30 days.

How to Store Hexarelin

Keep the dry powder well below freezing, dry and away from light; it can handle room temperature for 3–4 weeks. Once mixed with liquid, refrigerate and use within 10–14 days, avoiding repeated freezing and thawing.

Lyophilized Storage

Store below -18°C, desiccated, away from light; stable at room temperature for 3–4 weeks.

Reconstituted Storage

Refrigerate at 2–8°C, use within 10–14 days.

Handling Notes

Avoid repeated freeze-thaw cycles.

A smartphone displaying a "Storage Guide" for peptides, indicating a safe storage temperature range of 2–8°C, with warnings to keep away from light, heat, and freezing. The background is light blue, and additional tips on protecting the peptides are visible below the temperature range.

What Are the Benefits of Hexarelin?

What research says it may help with, and how it works in the body.

growth hormone enhancement

The strongest peptide of its kind for triggering the body's own growth hormone release from the pituitary gland.

When combined with another growth-hormone-releasing peptide (GHRH), it boosts growth hormone release by more than the two would achieve separately.

Meaningfully raises IGF-1 levels by boosting the release of growth hormone.

cardiovascular

Protects heart tissue by activating a specific docking site on cells called the CD36 receptor.

Affects the heart by increasing the flow of calcium into heart cells through channels that open in response to electrical signals.

Reduces the programmed death of heart muscle cells and helps regulate the electrical signals that drive each heartbeat.

metabolic

Improves how the body processes fats, acting through the CD36 receptor, in lean animal models with insulin resistance.

Improves the ratio of lean muscle to body fat by raising growth hormone and IGF-1 levels.

What Are the Side Effects of Hexarelin?

Who should avoid it, warning signs to watch for, and what to know before combining it with other compounds.

Who Should Avoid It

Active cancer or history of cancer

Pregnancy or breastfeeding

Pituitary disorders

WADA prohibited for competitive athletes

Stop Right Away If You Notice

Severe or persistent headaches

Unusual swelling

Signs of carpal tunnel syndrome

Allergic reactions

Milder Signs to Watch For

Discolored or yellow powderCloudy solution after reconstitutionParticles or precipitates in solution
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How Long Should a Hexarelin Cycle Last?

This breaks down how long a typical Hexarelin cycle runs and what research suggests happens at each stage. Research shows that staying on a peptide continuously, without a break, may make it less effective over time.

That's why most research protocols build in a break between cycles, often called a washout period, to let the body reset before starting again.

Week 0-0
GH spike within 15-30 minutes of injection
Week 1-2
Improved sleep quality and recovery
Week 2-4
Enhanced energy and well-being
Week 4-8
Noticeable improvements in body composition
Week 8-12
Maximum benefits; consider cycling to prevent desensitization

Cheat Sheets Featuring Hexarelin

See how Hexarelin fits into a broader research stack with these free downloadable cheat sheets. Each one includes reference dose ranges, dosing frequency, and half-life for every peptide it covers. For research purposes only.

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Growth Hormone Peptide Cheat Sheet
Growth Hormone Peptide Cheat Sheet

13 peptides

Master Peptide Cheat Sheet
Master Peptide Cheat Sheet

78 peptides

Weight Loss Peptide Cheat Sheet
Weight Loss Peptide Cheat Sheet

19 peptides

Hexarelin Research References

It is a phase 2 compound

4Research references

Hexarelin

Hexarelin is a phase 2 compound

Hexarelin Improves Lipid Metabolic Aberrations in Insulin-Resistant Mice

Hexarelin treatment improved lipid metabolism via CD36 receptor in non-obese insulin-resistant MKR mice.

n.d.

Effect of Repeated Hexarelin Administration on GH Responsivity

Demonstrated synergistic GH response when hexarelin co-administered with GHRH, greater than arithmetic sum.

n.d.

Hexarelin Modulates GHS-R1a Expression

Hexarelin significantly increased pituitary and hypothalamic GHS-R1a mRNA levels.

n.d.

Kinetics and Disposition of Hexarelin in Rats

Half-life of 75.9 min; rapidly absorbed subcutaneously; stable against proteolytic enzymes.

n.d.

Frequently Asked Questions About Hexarelin

Straight answers on reconstitution, dosing, and safety, everything you need to research with confidence. For research reference only.