Peptide Guide + Calculator
GHRP-2 Reconstitution Calculator & Guide
Pralmorelin / GH-Releasing Peptide-2
GHRP-2, also called pralmorelin, is a synthetic growth-hormone secretagogue that activates the ghrelin/GHS-R pathway. Human studies show acute growth-hormone release and appetite effects, but those findings do not establish bodybuilding, recovery, anti-aging, or performance benefits.
Evidence Snapshot
GHRP-2 research at a glance
Standardized regulatory and evidence context so research compounds, investigational drugs, and approved medications are not treated as if they have the same level of human evidence.
Regulatory status
Not FDA-approvedDevelopment / evidence stage
Early clinical / human pharmacology
Human evidence level
Human pharmacology / early clinicalPrimary mechanism
Ghrelin/GHS-R agonist growth-hormone secretagogue that stimulates pituitary GH release.
WADA context
Explicitly prohibited — S2Human intervention evidence
Human evidence is primarily provocative-test and short pharmacology research, including repeated-exposure studies, rather than long-term performance or body-composition trials.
Human biology evidence
Controlled human studies demonstrate acute GH release and appetite effects after GHRP-2 exposure.
Key takeaway
GHRP-2 reliably triggers acute GH release in humans, but that does not establish sustained anabolic, fat-loss, recovery, or anti-aging benefit.
Evidence labels describe the research base and regulatory context; they are not treatment, dosing, or use recommendations. Review dates describe the last BACToBasics source check for this evidence summary. Anti-doping rules can change and should be verified with the applicable authority.
GHRP-2 Reconstitution Calculator
Enter the vial amount, liquid volume, and amount you want to calculate. BACToBasics will automatically calculate concentration, liquid volume, and U-100 syringe-unit equivalents.
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Calculator values are educational math inputs only. They are not recommended preparation amounts, doses, or use protocols.
GHRP-2 Reconstitution Math
Reconstitution math starts with the amount contained in the vial and the liquid volume used in the calculation. Dividing the vial amount by the liquid volume gives the resulting concentration.
Example vial amount
5 mg
| Liquid Volume | Calculation | Concentration |
|---|---|---|
| 1 mL | 5 mg ÷ 1 mL | 5 mg/mL |
| 2 mL | 5 mg ÷ 2 mL | 2.5 mg/mL |
| 3 mL | 5 mg ÷ 3 mL | 1.6667 mg/mL |
This table demonstrates concentration math only. The liquid volumes shown are examples for comparison and are not preparation recommendations.
More Reconstitution Tools
Need to compare different liquid volumes or convert between mg, mcg, mL, and U-100 units? Use the dedicated BACToBasics calculator tools.
What is GHRP-2?
GHRP-2 is a synthetic peptide growth-hormone secretagogue and ghrelin-receptor agonist. It was developed primarily as a research and diagnostic secretagogue rather than as an approved bodybuilding or wellness therapy.
What does human research show?
Controlled human studies demonstrate that GHRP-2 can acutely stimulate growth-hormone secretion. It has also been studied as a provocative test for growth-hormone deficiency. These endocrine-response studies establish biological activity, not long-term therapeutic benefit for muscle gain, fat loss, recovery, or anti-aging.
GHRP-2 and appetite
A small controlled study in healthy men found increased food intake during GHRP-2 infusion, consistent with ghrelin-pathway activity. That finding is relevant when evaluating claims that all GH secretagogues have identical appetite effects.
Repeated exposure is not the same as a single GH spike
A five-day human study reported attenuation of the growth-hormone response and no increase in IGF-1. Short provocative-test responses therefore should not be treated as proof of sustained anabolic effects.
U.S. regulatory and sport context
FDA warning letters have stated that GHRP-2 is not a component of an FDA-approved human drug and did not qualify for certain 503A compounding exemptions. WADA lists GHRP-2/pralmorelin among prohibited GH-releasing peptides.
GHRP-2 reconstitution math
BACToBasics can calculate concentration from user-entered vial mass and liquid volume. The calculator does not provide a recommended GHRP-2 dose, schedule, route, or performance protocol.
Explore more about GHRP-2
8 linksComparisons, research records, development tracking, blends, and related guides are available here when you want to go deeper.
Explore more about GHRP-2
8 linksComparisons, research records, development tracking, blends, and related guides are available here when you want to go deeper.
Blend guides containing GHRP-2
These pages are derived from blend component metadata, so a new blend automatically becomes discoverable from each linked component guide.
Related peptide guides
Related guides are ranked from shared comparison pages, shared blend pages, and peptide category rather than a hand-maintained link list.
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Relevant glossary concepts
Definitions are matched against the guide's structured title, subtitle, description, and educational sections.
FDA-Approved
A status indicating that the FDA has approved a specific drug product for one or more labeled uses after reviewing the required evidence and manufacturing information.
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GlossaryAgonist
A molecule that binds to a receptor and activates signaling through that receptor.
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GlossaryConcentration
The amount of a substance contained in a given volume of liquid, such as mg/mL or mcg/mL.
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GHRP-2 FAQ
Tap a question to expand only the answer you want to read.
Does GHRP-2 increase growth hormone in humans?
Yes. Human provocative-test studies show acute GH release after GHRP-2 administration.
Does that prove GHRP-2 builds muscle or burns fat?
No. Acute hormone release is not the same as demonstrating a clinically meaningful long-term body-composition or performance benefit.
Can GHRP-2 increase appetite?
Yes. A small controlled human study found increased food intake during GHRP-2 exposure.
Is GHRP-2 prohibited in sport?
Yes. WADA includes GHRP-2 among prohibited GH-releasing peptides.
Sources & References
4 sourcesOpen the references when you want to inspect the research and regulatory sources behind this guide.
Sources & References
4 sourcesOpen the references when you want to inspect the research and regulatory sources behind this guide.
Controlled human study of appetite and ghrelin-pathway effects.
Human diagnostic study demonstrating reproducible GH responses.
Human repeated-exposure study reporting response attenuation and no IGF-1 stimulation.
FDA regulatory context for compounded products using these bulk substances.
BACToBasics provides educational information and math tools only. This content is not medical advice, dosing advice, injection instruction, or a recommendation to use any peptide or medication.