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Ipamorelin
research guide
Ipamorelin is a synthetic pentapeptide described in the pharmacology literature as a selective growth hormone secretagogue: in animal and in vitro work it released growth hormone with potency similar to a reference peptide (GHRP-6) while not significantly raising ACTH or cortisol, unlike some other secretagogues tested in the same study [1]. A human pharmacokinetic and pharmacodynamic dosing study in healthy male volunteers examined dose-proportional growth hormone release after intravenous infusion [2]. Ipamorelin has no FDA-approved indication and is sold only as a research chemical.
Laboratory or animal findings, not clinical validation. Literature summary, not clinical peer review.
Looking for the product? Reign listings and business disclosure ↓
Jorge Abreu is not a doctor. This is an educational research summary, not a prescription or a personal dosing plan. Study results do not establish that a supplier product is safe or effective for people. Consult a licensed clinician about medical decisions.
01 · Start with identity
What is Ipamorelin?
Ipamorelin refers to a specific five-amino-acid peptide sequence. Reign Peptide's product is a lyophilized research-chemical powder of this sequence labeled for laboratory use; it is not manufactured or regulated as a pharmaceutical product and has no approved clinical formulation for comparison.
Also searched as: NNC 26-0161, pentapeptide growth hormone secretagogue
02 · Read the evidence
What the studies reported
01
Selectivity for GH over ACTH and cortisol in animal and in vitro models
In rat pituitary cells, anaesthetized rats and conscious swine, ipamorelin released growth hormone with potency and efficacy comparable to GHRP-6; in swine, none of the growth hormone secretagogues tested (including ipamorelin) altered FSH, LH, prolactin or TSH levels, and ipamorelin, unlike GHRP-6 and GHRP-2, did not raise ACTH or cortisol above levels seen with GHRH stimulation alone, even at doses more than 200-fold above its effective dose for GH release. [1]
02
Human dose-response study
A pharmacokinetic-pharmacodynamic study in healthy male volunteers used an ascending intravenous infusion design across several dose levels and reported dose-proportional pharmacokinetics with a short terminal half-life of about two hours, alongside measured growth hormone responses. [2]
03 · Numbers in context
What does dosing evidence actually support?
The human data available comes from a controlled infusion pharmacokinetic study using intravenous administration in a small cohort of healthy male volunteers, designed to characterize dose-response and clearance rather than to establish a therapeutic or wellness dosing protocol [2]. That study did not use subcutaneous injection at the doses or frequency commonly discussed in non-clinical settings, so it describes measured pharmacology, not a validated dosing regimen for any other route or population.
A study dose is not a personal dose. Population, route, formulation and supervision are part of the result. Online community schedules are not treated here as established clinical protocols.
04 · Safety and limits
What not to overlook
- No FDA-approved human indication or dosing protocol for ipamorelin exists in the sources reviewed.
- The published human study used intravenous infusion in a small, closely monitored cohort, not the subcutaneous route or population typically discussed for research use.
- Long-term safety data in humans beyond the single pharmacokinetic study was not identified in the sources reviewed.
- Selectivity findings (no significant ACTH, cortisol, FSH, LH, prolactin or TSH elevation) come from rat, swine and in vitro pharmacology, not from a human selectivity study [1].
05 · Product distinctions
Names are not interchangeable
Reign Peptide sells ipamorelin as a lyophilized powder vial intended for laboratory research reconstitution, distinct in manufacturing standard and regulatory status from any pharmaceutical-grade product. No approved drug formulation of ipamorelin exists for comparison in the sources reviewed.
06 · Handling and storage
Follow validated product instructions
A single water volume, refrigerator temperature or expiry window cannot be assumed for every compound and formulation. Use the exact manufacturer documentation and a validated laboratory procedure. If stability, solvent compatibility or microbiological quality is not documented, those properties remain unverified.
Refrigeration, clear appearance and bacteriostatic water do not make an unverified research product suitable for injection. This guide does not provide a mixing or administration procedure.
The existing concentration calculator checks arithmetic only. It cannot choose a safe dose or establish compatibility, sterility or shelf life.
Reign Peptide · Business disclosure
Research product listings
Jorge Abreu is involved in Reign Peptide. Links to Reign are a business connection, not an independent endorsement. Reign lists these products for laboratory research, not human consumption.
Use the listing to check the labeled identity, amount and available batch documentation. A purity result alone does not verify sterility, clinical suitability or equivalence to a medicine used in a trial.
Names and sizes are product labels, not dosing recommendations. Confirm current details with the seller.
Supplies and accessories
Compare the actual specifications
Jorge's supply directory includes syringes, alcohol pads, storage cases, travel refrigeration and electrolytes, with separate links for the two travel refrigeration options. Accessory availability is not a recommendation to administer a research compound.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases.
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Peptide fridge case
Listing: 63 slots for 3mL bottles, bag only. An organizer is not active refrigeration or a validated storage system.
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Peptide travel case
Medineed travel case with temperature display and two ice packs per listing. Check dimensions and transport requirements.
View on Amazon ↗Questions still worth asking
What remains unresolved?
- Does the growth hormone secretagogue selectivity observed in early animal pharmacology hold up in larger, longer-duration human studies?
- What are the pharmacodynamics of ipamorelin administered subcutaneously and repeatedly, as opposed to the single intravenous infusion design studied?
Check the source
References and evidence scope
- Animal study · 1998Ipamorelin, the first selective growth hormone secretagogue ↗
- Human trial · 1999Pharmacokinetic-pharmacodynamic modeling of ipamorelin, a growth hormone releasing peptide, in human volunteers ↗
These are the sources reviewed for this page, not an exhaustive systematic review. Related compound research is identified as such. Product links are not scientific references.
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