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Research peptide

What is GHRP-6?

GHRP-6 explained in plain English: what it is, what the research shows, side effects, legal status and dosage, plus a calculator for syringe units. There is no validated human dose, and this page doesn't invent one. Also called Growth hormone-releasing hexapeptide.

GHRP-6 is not approved for human use by the FDA or any other regulator. This page is educational; talk with a qualified healthcare professional before using any substance.

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Vial unit

= 5,000 mcg

mL
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–units

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Syringe, no result yetU-100, 1 mL syringe holding up to 100 units. Enter your dose.0102030405060708090100

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What is GHRP-6?

GHRP-6 is a lab-made peptide of six amino acids, one of the first growth hormone-releasing peptides, developed in the 1980s. It makes the pituitary gland release growth hormone by copying ghrelin.

It is sold online as a research peptide for muscle, recovery and weight gain.

What does GHRP-6 do?

GHRP-6 raises growth hormone and, more than most similar peptides, makes people very hungry. It also raises cortisol and prolactin.

Because of the hunger, it is mostly used by people trying to gain weight or muscle. GHRP-2 and ipamorelin are similar peptides with less effect on appetite.

What does the research on GHRP-6 show?

Studies from the 1980s and 1990s showed GHRP-6 reliably raises growth hormone in people. It has never gone through trials showing it improves muscle, body fat or health, and it was never developed into a medicine.

GHRP-6 side effects and risks

Reported side effects include strong hunger, water retention, tingling, tiredness and higher blood sugar. Long-term effects of raising growth hormone and cortisol are unknown.

The FDA has flagged possible immune reactions, and products sold online aren’t checked for purity or strength.

GHRP-6 is not approved for human use anywhere. In the US it is on the FDA’s list of compounding substances with safety concerns for outsourcing facilities, and it is banned in sport at all times.

How do you reconstitute GHRP-6?

GHRP-6 research vials hold a freeze-dried powder that is mixed with bacteriostatic water. The calculator above turns the vial size, the water and a dose into syringe units, and the reconstitution guide explains each step.

See the dosage section below for what is known about doses, with sources.

GHRP-6 dosage

GHRP-6 has never been approved and has no validated human dose. Doses quoted online come from sellers and forums, not from trials.

There is no approved or validated human dose. This site does not repeat doses from forums, sellers or animal studies.

Medical disclaimer: this dosage information is for education only and comes from the source shown for each row. It is not medical advice and not a recommendation for you. Only a licensed prescriber who knows your health can decide whether GHRP-6 is right for you and at what dose. Don't start, change or stop a medicine based on this page, and don't use research peptides or unapproved drugs based on trial doses.

GHRP-6 concentration chart

The concentration of a GHRP-6 vial depends only on its size and the water you add. Each unit on a U-100 syringe holds one hundredth of a mL.

GHRP-6 concentration by vial size and water
Vial + waterConcentrationPer unit (U-100)
5 mg + 1 mL5,000 mcg/mL (5 mg/mL)50 mcg per unit (0.05 mg per unit)
5 mg + 2 mL2,500 mcg/mL (2.5 mg/mL)25 mcg per unit (0.025 mg per unit)
5 mg + 3 mL1,666.67 mcg/mL (1.66667 mg/mL)16.67 mcg per unit (0.01667 mg per unit)
10 mg + 1 mL10,000 mcg/mL (10 mg/mL)100 mcg per unit (0.1 mg per unit)
10 mg + 2 mL5,000 mcg/mL (5 mg/mL)50 mcg per unit (0.05 mg per unit)
10 mg + 3 mL3,333.33 mcg/mL (3.33333 mg/mL)33.33 mcg per unit (0.03333 mg per unit)

Frequently asked questions

Why does GHRP-6 make you hungry?

It copies ghrelin, the hormone that signals hunger, so it raises appetite strongly as well as growth hormone.

Is GHRP-6 approved?

No. GHRP-6 has never been approved for any use in any country.

Is GHRP-6 banned in sport?

Yes. The World Anti-Doping Agency bans growth hormone secretagogues like GHRP-6 at all times.

Sources

  1. Wikipedia, GHRP-6 (with cited studies)
  2. FDA, Certain Bulk Drug Substances for Use in Compounding that May Present Significant Safety Risks
  3. World Anti-Doping Agency, The Prohibited List

Last updated .

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