GHRP-2 and GHRP-6
Raise growth hormone and hunger; no long-term trials.
The first generation of growth-hormone-releasing peptides. They act on the receptor for the hunger hormone. Also called Pralmorelin and Growth-hormone-releasing peptides.
What the evidence shows
Side effects and risks
Who should avoid it: People with diabetes, and athletes.
Athletes: Prohibited at all times (class S2). GHRP-2 and GHRP-6 are named on the list as growth-hormone-releasing peptides. USADA advisory on 2027 WADA list, 2026-10
How it works
- Where it acts
- Ghrelin receptors on the pituitary gland and in the brain.
- What it changes
- Strong pulses of growth hormone. Both can also raise cortisol and prolactin.
- What people notice
- GHRP-6 sharply increases hunger. Water retention is common. Little trial data.
How it has been given in studies
Short infusions, single injections or nasal sprays, dosed by body weight. There is no approved consumer dose.
Getting it in the United States
The legal route for GHRP-2 and GHRP-6
Not FDA-approved and not eligible for pharmacy compounding. Vials sold for research use only are unapproved drugs when marketed for people.
Routes people use for any peptide in the United States
Telehealth prescribing
Online clinics prescribe after a questionnaire, sometimes with no live doctor visit, and mail the drug. FDA moved in February 2026 to restrict mass-marketed compounded copies and claims that they are generic equivalents.
Risk: Thin medical screening. Compounded versions are not reviewed by FDA for quality.
Covers: Approved GLP-1 drugs, compounded semaglutide and tirzepatide
Source: GZERO Media, Apr 2026
Clinical trial enrolment
The only lawful way to get an unapproved peptide drug with medical monitoring. ClinicalTrials.gov lists eligibility, sites and phone numbers. Researchers note recruitment is hard when people can buy the drug on the gray market instead of risking placebo.
Risk: Possible placebo assignment, strict eligibility and travel to a study site.
Covers: Investigational peptide drugs still in development
Source: NIH, finding a clinical trial
Compounding pharmacies, now restricted
Both peptides sit in FDA Category 2 since 2023, so compounding them invites enforcement. FDA cites impurity and immune-reaction risks and blood sugar effects.
Source: FDA, 2026-04
Routes people use for any peptide in the United States
Compounding pharmacy with prescription
A clinician prescribes and a pharmacy compounds. Twelve peptides left the FDA do-not-compound category in April 2026 and a panel backed six in July, but they are not yet formally eligible. Pharmaceutical-grade ingredient is scarce.
Risk: Legal status is unsettled until FDA rulemaking ends. Pharmacies may use research-grade ingredient.
Covers: BPC-157, TB-500, KPV, MOTS-c, Semax, Epitalon and similar
Source: Frier Levitt, Apr 2026
Med spas and weight-loss clinics
Very common. Secret shoppers called 75 clinics and med spas in two states after shortages ended. 92 percent offered compounded semaglutide and 87 percent tirzepatide, often mixed with B vitamins to look custom.
Risk: Four of 23 suppliers lacked sterile compounding licenses and four had disciplinary records.
Covers: Compounded semaglutide and tirzepatide
Source: American Med Spa Association on JAMA Health Forum study, Jul 2026
Concierge and longevity doctors
Cash-pay physicians build peptide plans for wealthy clients. Reporting from San Francisco says some source from overseas channels, domestic research-use-only sellers or the few compounding pharmacies that will supply clinicians.
Risk: A doctor's involvement does not guarantee a pharmaceutical-grade product.
Covers: BPC-157, thymosin alpha-1, Selank, Semax, CJC-1295, ipamorelin, retatrutide
Source: San Francisco Standard, Sep 2025
Cross-border purchase or import
FDA says importing drugs for personal use is illegal in most cases but it may not object to small personal quantities in limited situations. Reporting also describes people travelling to Mexico for injections.
Risk: Packages can be seized. Product origin and cold-chain handling are hard to check.
Covers: Approved prescription peptides sold abroad
Source: FDA, personal importation
Routes people use for any peptide in the United States
Research-chemical websites
Sites sell vials marked for research or not for human consumption, with no prescription. FDA says some ship direct to consumers with dosing directions, and it has sent warning letters. Retatrutide exists only through this route or trials.
Risk: Unknown identity, strength and sterility. No pharmacist or prescriber involved.
Covers: Retatrutide, semaglutide, tirzepatide, BPC-157 and most unapproved peptides
Source: FDA, unapproved GLP-1 drugs page
Direct orders from Chinese factories
Buyers message factory sales agents and pay by crypto or payment app. A minimum order of about ten vials pushes people to buy in bulk and share. A blockchain analysis found US buyers were the largest source of funds.
Risk: Many of the same vendors list fentanyl precursors. Lab reports sent by sellers cannot be verified.
Covers: GLP-1 copies, melanotan II, BPC-157, TB-500, GHK-Cu, epitalon
Source: TRM Labs, Oct 2026
Chat groups and social sellers
Dealers are found through Telegram, WhatsApp, Discord and influencer discount codes. In a May 2026 survey of 1,000 US users, 14.5 percent bought this way and three quarters asked an AI chatbot for dosing.
Risk: 45 percent of social media buyers in that survey reported an emergency or urgent care visit for a reaction.
Covers: Retatrutide and other research-use-only peptides
Source: The Ethos, May 2026
This describes what people do. It is not advice. The decision is yours.
What users report
Recurring themes in public forum posts, unverified and with no comparison group.
Reported benefits
- Bigger appetite, used on purpose for bulking
- Sleepiness after a night dose
Reported problems
- Ravenous hunger
- Water retention, tingling hands
- Jittery or anxious feeling
What experts and influencers say
Recorded views, not a survey or scientific consensus. Cautions may concern misuse or unapproved products. Statements are paraphrased; check each source for context.
Supportive expert view
No sourced expert view in this category yet. See the full list for other perspectives.
Cautionary expert view
No sourced expert view in this category yet. See the full list for other perspectives.
See all views 14
Lists GHRP-2 and GHRP-6 as Category 2 compounding substances. Cites immune-reaction risk from impurities, raised blood glucose, cortisol effects, and serious events including deaths in critically ill GHRP-2 study subjects, with cause unproven.
Source: FDA, 2026-04
US Food and Drug AdministrationSourceWarns against
Sells pralmorelin, the drug name for GHRP-2, in Japan as a single-use test for growth hormone deficiency. Phase 2 work in short stature never led to a treatment product.
Source: Wikipedia, Pralmorelin, 2006
Kaken PharmaceuticalSourceMixed view
Money: Markets the product
States both peptides are named on the 2026 Prohibited List under S2. Records that Olympic sample retests found GHRP-2 in three weightlifters from 2008 and one biathlete from 2010.
Institute of Biochemistry, German Sport University CologneSourceWarns against
In August 2014 accepted a backdated 12-month doping ban over the club's 2011 peptide program, as did most other players who received show-cause notices. Missed the rest of the season and a Four Nations tournament.
Source: Wikipedia, Cronulla supplements saga, 2014
Paul GallenInstagramMixed viewSays they used it
Seized unauthorized injectable GHRP-2 and GHRP-6 sold through a website. Said none were assessed for safety or quality and that selling them is illegal in Canada.
Source: Health Canada advisory, 2025-08
Health CanadaSourceWarns against
MLB suspended him for 80 games without pay in March 2019 after a positive test for GHRP-2.
Source: Wikipedia, Steven Wright (baseball), 2019
Steven WrightWikipediaMixed viewSays they used it
Photo source: Chairman of the Joint Chiefs of Staff / CC BY 2.0
Banned a Ukrainian lifter for three years after an out-of-competition urine sample contained GHRP-2 and its metabolite.
Source: IPF, 2023
International Powerlifting FederationSourceWarns against
The NBA suspended him for 25 games after a test showed ipamorelin and GHRP-2. He denied ever using a banned drug and his lawyer said they would appeal.
Source: CBS Sports, 2018-04
Jodie MeeksInstagramMixed view
Said he stopped the program after a few weeks once he learned players were being injected. The league still suspended him for 12 months in 2013.
Source: Wikipedia, Cronulla supplements saga, 2013
Shane FlanaganWikipediaWarns against
The NRL fined the club 1 million Australian dollars over its 2011 program, with 400,000 suspended on governance conditions. Dank admitted overseeing injections of CJC-1295 and GHRP-6.
Source: Wikipedia, Cronulla supplements saga, 2013
Cronulla-Sutherland SharksSourceWarns againstSays they used it
An out-of-competition test found GHRP-6. USADA banned him for two years in 2016. He first blamed a skin cream for psoriasis and later accepted that he had not checked the product.
Source: Wikipedia, Chad Mendes, 2016
Chad MendesInstagramWarns againstSays they used it
An out-of-competition sample from April 2017 showed growth hormone releasing peptides. The result was announced the day before the Giro d'Italia. He was banned for four years, until May 2021.
Source: Cyclingnews, 2017
Stefano PirazziWikipediaWarns againstSays they used it
Photo source: Jérémy-Günther-Heinz Jähnick / CC BY-SA 3.0
He tested positive for growth hormone releasing peptides alongside teammate Pirazzi before the 2017 Giro. Their team ended both contracts after the B samples confirmed the results.
Source: Wikipedia, Stefano Pirazzi, 2017
Nicola RuffoniWikipediaWarns againstSays they used it
Photo source: Cs-wolves / CC BY-SA 4.0
Its advisory on the 2027 list says peptides are now named in the non-approved class. It lists BPC-157, TB-500, AOD-9604, GHRPs, ipamorelin and thymosin beta-4 and urges caution with any unnamed peptide.
Source: USADA athlete advisory, 2026-10
More contextCase reports, watch and read, emerging uses and chemistry
Case reports
From journals, regulators and studies of users. One case proves little.
Harm reportednews-reported case - 3 people - 2017
Three weightlifters lost their 2008 Olympic results after stored samples were retested years later and found to contain GHRP-2.
Harm reportednews-reported case - 1 person - 2020
A mixed martial arts fighter tested positive for GHRP-2 and its metabolite in 2020 and accepted a 22-month ban, reduced for cooperation.
Source: USADA UFC programme, 2020
Harm reportednews-reported case - 1 person - 2023
A powerlifter gave an out-of-competition sample in 2023 that contained GHRP-2 and its metabolite. He was banned for three years.
Source: IPF, 2023
FDA notes serious event reports with GHRP-2
Harm reportedcase series - 2023
The FDA says it is aware of serious adverse event reports with GHRP-2, including higher insulin needs, deaths of critically ill study subjects, infection and pancreatitis. It states that causality has not been established.
Watch and read
Explainers, reporting and podcasts worth your time. Summaries are ours. No sellers.
Benefits & Risks of Peptide Therapeutics for Physical & Mental Health
Dr Andrew Huberman, Stanford neuroscientist
Solo episode on peptide categories; he groups GHRP-2, GHRP-3 and GHRP-6 as strong growth hormone releasers that also raise cortisol, and advises caution.
Clear explanation of how GHRPs differ from sermorelin-type drugs.
5 Things to Know About the FDA's Peptide Reversal
Habiba Atta, writer
Explains the 2026 loosening of FDA peptide restrictions; GHRP-2 and GHRP-6 are expected to stay restricted, and gray-market quality and safety gaps remain.
Shows where GHRPs stand in the current US rules.
When options run out
Uses people turn to when standard treatment has failed.
Testing for growth hormone deficiency
- Who
- Endocrinologists in Japan who need to check whether the pituitary can release growth hormone.
- Evidence
- Marketed in Japan as a single-use diagnostic. Its growth hormone response is weaker in deficient people than in healthy people.
- Route
- Approved diagnostic product in Japan
Source: Wikipedia, Pralmorelin
Legal last-resort routes
Expanded access (compassionate use)
For a serious or life-threatening condition with no comparable alternative and no trial you can join. Your physician asks the company for the drug, then files with FDA and an ethics board. The company can refuse. Costs are often not insured.
Right to Try
For a life-threatening condition after approved options are exhausted and no trial is open to you. The drug must have finished Phase 1 and be in active development. Your doctor asks the manufacturer directly. FDA does not review requests.
Source: FDA, Right to Try
Trial finders
Search ClinicalTrials.gov by condition or drug name, check eligibility and call the listed site. ResearchMatch is a free NIH-funded registry that lets researchers find you. Discuss risks with your own clinician before enrolling.
Source: NIH, finding a clinical trial
Personal import for serious conditions
FDA may not object when a US citizen imports up to about three months of a drug for a serious condition with no effective US treatment, with written personal-use confirmation and a US doctor's details. It is discretion, not a right.
Source: FDA, personal importation
Patient-specific compounding
When the approved product cannot meet a specific need of an identified patient, a prescriber can order a compounded version from a licensed pharmacy. Lower price alone does not qualify. Ingredients must be pharmaceutical grade.
Amino-acid sequence
Striped tiles are mirror-image (D) amino acids, which resist breakdown. GHRP-6 shown. GHRP-2 is dA d2Nal A W dF K.
Questions people ask
Does GHRP-6 make you hungry?
Yes. GHRP-6 sharply increases hunger, and in one study seven lean men ate 36% more after GHRP-2. Some users take them on purpose for bulking.
How do GHRP-2 and GHRP-6 compare with ipamorelin?
Both give strong pulses of growth hormone and can also raise cortisol and prolactin. They have largely been replaced by ipamorelin in clinics and stacks.
What are the side effects of GHRP-2 and GHRP-6?
Strong hunger, higher cortisol and higher blood sugar, plus water retention. FDA notes deaths among critically ill patients in GHRP-2 studies, cause not established, and there are no long-term safety or cancer data.
Are GHRP-2 and GHRP-6 legal?
In the US they are not on the list pharmacies may compound from and are on the FDA safety-risk list for outsourcing facilities. In Australia possession without authority is illegal, and Health Canada named them in a 2025 advisory.
Your notebook
Taking it? A ten-second daily check-in keeps a record of how you feel, to talk through with your clinician.
Sources
- Sigalos & Pastuszak 2018: review of growth-hormone secretagogues
- FDA: bulk substances that may present significant safety risks
- WADA Prohibited List
Structure: PubChem