01 · At a glance
Quickstart Highlights
GHRP-6 is a synthetic growth-hormone-releasing peptide and ghrelin (GHS-R1a) receptor agonist that triggers a short pulse of growth hormone from the pituitary; a hallmark of GHRP-6 is strong hunger and appetite stimulation[1][5]. This educational page outlines a subcutaneous approach on an empty stomach, with a dilution chosen so doses land on easy-to-read insulin-syringe marks. It is an unapproved research chemical, not a medicine, and muscle, recovery and anti-aging benefits are not established by rigorous human trials — presented for research and educational use only.
Reconstitute
Add 3.0 mL bacteriostatic water to one 10 mg vial → ~3.33 mg/mL (3,333 mcg/mL), the largest practical dilution for accurate dosing.
Daily range
100–300 mcg per dose, 1–3× daily on an empty stomach, titrated upward gradually across a 12-week course.
Easy measuring
At ~3.33 mg/mL, 1 unit ≈ 33.3 mcg; 100 mcg ≈ 3 units and 300 mcg ≈ 9 units on a U-100 syringe.
Storage
Lyophilized: store at −20 °C (−4 °F); once reconstituted, refrigerate at 2–8 °C (35.6–46.4 °F) and do not freeze the solution.
i
Important: Start with the Prep & Injection Guide — it covers the preparation and safety basics every protocol on this site assumes.
02 · Dosing & reconstitution
Dosing & Reconstitution Guide
A single practical dilution with accurate once-daily dosing, step by step
Standard / Gradual Approach (3 mL = ~3.33 mg/mL)
▪
Reconstitute: Add 3.0 mL bacteriostatic water to one 10 mg vial → final concentration ~3.33 mg/mL (3,333 mcg/mL).
▪
Typical dose: 100–300 mcg per dose, 1–3× daily on an empty stomach, raised gradually over a 12-week course.
▪
Easy measuring: At ~3.33 mg/mL, 1 unit ≈ 33.3 mcg on a U-100 syringe, so 100 mcg ≈ 3 units and 300 mcg ≈ 9 units — small, readable volumes on the U-100 scale.
▪
Storage: Lyophilized: store at −20 °C (−4 °F); after reconstitution, refrigerate at 2–8 °C (35.6–46.4 °F) and do not freeze the mixed solution.
Phase / Week(s) Dose & Frequency Volume (U-100 units / mL) Weeks 1–2 100 mcg (1–3× daily) ~3 units (0.03 mL) Weeks 3–4 200 mcg (1–3× daily) ~6 units (0.06 mL) Weeks 5–12 300 mcg (1–3× daily) ~9 units (0.09 mL)
Frequency: typically 1–3 subcutaneous injections per day on an empty stomach, titrating up as tolerated. The GH response is generally reported to plateau around ~100 mcg per dose, so the protocol is built around that response ceiling rather than ever-larger single doses[3][4]. These figures come from reference protocols, not from approved human dosing.
Reconstitution Steps
1
Draw 3.0 mL of bacteriostatic water into a sterile syringe.
2
Release it slowly down the vial’s inner wall to limit foaming.
3
Swirl or roll gently until fully dissolved — don’t shake.
4
Label with the date and concentration, then refrigerate at 2–8 °C (35.6–46.4 °F), shielded from light.
Note
The 3.0 mL dilution gives ~3.33 mg/mL so each dose reads in clear, low single- and double-digit unit marks on a U-100 syringe. Avoid freezing the reconstituted solution, since freeze–thaw can denature the peptide.
Important: This guide is for educational purposes only and is not medical advice. For research use only. Not for human consumption.
03 · What you’ll need
Supplies Needed
Quantities below assume an 8–16 week course of once-daily injections with gradual titration.
✓Peptide Vials (GHRP-6, 10 mg each)
At these microgram doses a 10 mg vial lasts well beyond a week, so only a few vials cover a full course.
Low end (~100–200 mcg/day): ~2–3 vials Mid (~300–600 mcg/day): ~4–6 vials High (up to 900 mcg/day): ~8–10 vials
✓Insulin Syringes (U-100, 1 mL)
Per injection: 1 syringe 12 weeks (1× daily): ~84 syringes 12 weeks (3× daily): ~252 syringes
✓Bacteriostatic Water (10 mL bottles)
Use ~3.0 mL per 10 mg vial for reconstitution.
Low course (~3 vials): ~9 mL → 1 bottle High course (~10 vials): ~30 mL → 3 bottles
✓Alcohol Swabs
One for the vial stopper + one for each injection site, every dose.
Per injection: 2 swabs 12 weeks (1–3× daily): ~170–500 swabs → 2–5 boxes
Protocol Overview
A concise summary of the once-daily regimen, drawn from commonly cited reference protocols.
▪Goal: Stimulate a short pulse of pituitary growth hormone via the ghrelin (GHS-R1a) receptor; appetite stimulation is the most consistent reported effect — broader benefits are not established in humans[5][6]. ▪Schedule: Subcutaneous injections 1–3× daily on an empty stomach for about 12 weeks. ▪Dose Range: 100–300 mcg per dose with gradual titration, built around the ~100 mcg GH-response ceiling. ▪Reconstitution: 3.0 mL bacteriostatic water per 10 mg vial gives ~3.33 mg/mL for accurate unit measurements. ▪Storage: Keep the dry vial frozen at −20 °C (−4 °F); once mixed, refrigerate at 2–8 °C and do not freeze the solution.
Dosing Protocol
A suggested daily titration approach based on common reference doses.
▪Start: Begin at 100 mcg per dose, 1–3× daily on an empty stomach, to gauge tolerability and appetite response. ▪Titrate: Increase by roughly 100 mcg per dose every two weeks as tolerated. ▪Target: Reach about 300 mcg per dose by weeks 5–12, staying near the ~100 mcg per-dose GH-response ceiling. ▪Cycle Length: Typically 8–12 weeks; some references extend to ~16 weeks. ▪Timing: Inject at a consistent time each day and rotate injection sites systematically.
Storage Instructions
Correct storage is what preserves the peptide’s stability and activity.
▪Lyophilized: Hold the dry vial at −20 °C (−4 °F) in dry, dark conditions and limit moisture exposure[7]. ▪Reconstituted: Refrigerate at 2–8 °C (35.6–46.4 °F) and use within about 28 days; do not freeze the mixed solution, as freezing can denature peptides[8]. ▪Handling: Let frozen vials warm to room temperature before opening so condensation won’t form, and keep the solution clear of heat and direct light. ▪Freeze–thaw: Avoid repeated freeze–thaw cycles of the reconstituted solution.
04 · Good to know
Important Notes
Practical points that keep daily administration safe and consistent.
▪Sterile technique: Use a fresh sterile U-100 insulin syringe each time and drop it straight into a puncture-proof sharps container afterward. ▪Site rotation: Move between abdomen, thighs and upper arms to reduce local irritation and lipohypertrophy[9]. ▪Slow injection: Push the plunger slowly and pause a few seconds before withdrawing the needle to prevent backflow. ▪Recordkeeping: Log the daily dose, injection site and any observations to keep the protocol consistent. ▪Regulatory note: GHRP-6 is prohibited by WADA for athletic use and is not FDA-approved for human administration[10].
05 · How it works
How This Works
GHRP-6 is a synthetic growth-hormone-releasing peptide — a hexapeptide that acts as an agonist at the ghrelin / GHS-R1a receptor[1][2]. Binding that receptor on the pituitary and hypothalamus drives a pulse of growth-hormone release.
Its core mechanism is GH secretagogue activity: it stimulates GH-releasing pathways while suppressing somatostatin, producing a transient rise in growth hormone. A defining feature of GHRP-6 is strong stimulation of hunger and appetite, an effect that follows directly from ghrelin-receptor activation[5][6].
Studies also report a modest rise in cortisol and prolactin alongside the GH pulse[11]. Crucially, the GH response tends to plateau near ~100 mcg per dose, so larger single doses add little extra GH while increasing side effects[12].
Important caveat: there are no completed human efficacy trials showing that GHRP-6 builds muscle, improves recovery or slows aging. Most data come from short pharmacology and animal studies of GH release. Muscle, recovery and anti-aging claims rest on the GH-pulse mechanism and anecdote, and should be read as hypotheses.
GHRP-6 is not an approved medicine. It is an unapproved research chemical presented here for research and educational purposes only.
06 · Daily habits
Lifestyle Factors
Habits that may support healthy growth-hormone output alongside the protocol.
▪Nutrition: GHRP-6 increases appetite, so plan balanced, adequate-protein meals rather than overeating on impulse. ▪Activity & rest: Pair regular activity with real rest; avoid timing doses around large meals, since food blunts the GH response. ▪Sleep: Aim for 7–9 hours, when the largest natural growth-hormone pulses occur. ▪Stress: Manage stress with evidence-based practices, since cortisol can counteract growth-hormone signalling.
07 · What to expect
Potential Benefits & Side Effects
What short pharmacology and animal studies describe; human evidence is limited and individual results vary.
Potential Benefits
▪GH release (pharmacology): Reliably triggers a short pulse of growth hormone via the ghrelin/GHS-R1a receptor in human and animal studies[5][6]. ▪Appetite stimulation: Strong, consistent increase in hunger — the most reliably reported effect of GHRP-6[11]. ▪Short-term tolerability: Generally tolerated in short studies, with mild injection-site reactions reported. ▪Note on humans: Muscle, recovery and anti-aging benefits are not established in humans — no large-scale clinical efficacy trials of GHRP-6 have been completed[13].
Common Side Effects
▪Hunger & injection-site reactions: Marked appetite/hunger is expected; mild redness or soreness at the site can occur, and rotating sites helps. ▪Cortisol / prolactin & unknown long-term profile: A modest rise in cortisol and prolactin can occur; human long-term safety data is limited, so caution and monitoring are advised. ▪Sport restriction: Note that GHRP-6 is a WADA-prohibited substance for athletes.
08 · Injection technique
Injection Technique
General subcutaneous technique, following established clinical best-practice guidance[14][15].
Pre-Injection Preparation
▪Wash your hands well with soap and water. ▪Wipe the vial stopper with an alcohol swab and let it air-dry. ▪Choose a site (abdomen, thigh, or upper arm) and clean it with a fresh alcohol swab, letting it dry fully[15]. ▪Draw the intended dose, then check for air bubbles and push any out.
Injection Procedure
▪Pinch a skinfold at the chosen site between thumb and forefinger. ▪Insert the needle into the pinch at a 45–90-degree angle (use 45 degrees if the fat layer is thin)[14]. ▪Skip aspiration for subcutaneous shots — it isn’t needed[14]. ▪Press the plunger slowly and steadily until it’s fully down. ▪Wait 5–10 seconds, then pull the needle straight out to prevent leakage.
Post-Injection Care
▪Drop the used syringe straight into a puncture-proof sharps container — never recap a needle. ▪Return the reconstituted vial to the fridge right away. ▪Rotate the injection site each day to prevent irritation and lipohypertrophy[9]. ▪Watch the site for excess redness, swelling, or signs of infection.
09 · Where to source
Recommended Source
For high-purity research peptides, we point researchers to Prime Lab Peptides for GHRP-6 (10 mg).
Why Prime Lab Peptides?
▪Top-rated on Trustpilot: Independently reviewed as the highest-rated peptide lab on Trustpilot — making it the best current source in the USA. ▪Third-party tested: Every batch ships with a Certificate of Analysis (COA) confirming purity and composition. ▪Consistent quality: ISO-aligned manufacturing and handling keep product integrity reliable batch to batch. ▪Cold-chain integrity: Temperature-controlled shipping and storage across the whole fulfilment chain. ▪Research-grade purity: Fit for educational and research use that demands high-quality peptides.
Note: Product availability and specifications subject to change. Verify current product details on supplier website.
Shop at Prime Lab Peptides →
10 · The evidence
References
1
Endocrinology (PubMed)
Pharmacology of GHRP-6 as a growth-hormone-releasing peptide acting at the ghrelin/GHS-R1a receptor.
View Source ↗ 2
Journal of Clinical Endocrinology & Metabolism (PubMed)
GHRP-6 stimulates growth-hormone secretion via the ghrelin receptor in human subjects.
View Source ↗ 3
WADA Scientific Research
Appetite stimulation and dose-response of GH-releasing peptides such as GHRP-6.
View Source ↗ 4
Growth Hormone & IGF Research (PubMed)
GH-response plateau and dosing characteristics of GH secretagogues including GHRP-6.
View Source ↗ 5
Journal of Endocrinology (PubMed)
GHRP-6 induces growth-hormone release in preclinical models via the GHS receptor.
View Source ↗ 6
Peptides (PubMed)
Structure and GH-releasing activity of GHRP-6 and related ghrelin-receptor agonists.
View Source ↗ 7
Peptide Storage Guide
Best practices for storing lyophilized peptides (temperature, humidity and light protection).
View Source ↗ 8
Bacteriostatic Water Guidance
Bacteriostatic water for injection: multi-dose vial stability and handling.
View Source ↗ 9
NCBI Bookshelf
Best practices for subcutaneous injection: aseptic technique and site rotation.
View Source ↗ 10
WADA Prohibited List
Classification of GHRP-6 and GH secretagogues as prohibited substances in competitive sport.
View Source ↗ 11
Clinical Endocrinology (PubMed)
GHRP-6 effects on cortisol, prolactin and appetite alongside the growth-hormone pulse.
View Source ↗ 12
European Journal of Endocrinology (PubMed)
Dose-response of GHRP-6 showing the growth-hormone plateau near ~100 mcg per dose.
View Source ↗ 13
ClinicalTrials.gov
Trial registry search for GHRP-6; no completed large-scale human efficacy trials for muscle, recovery or anti-aging.
View Source ↗ 14
Centers for Disease Control and Prevention (CDC)
Subcutaneous injection technique: angle, site and no-aspiration guidance.
View Source ↗ 15
Subcutaneous Injection Technique (Patient Education)
How to administer a subcutaneous injection: clinical technique guidelines.
View Source ↗ 16
Prime Lab Peptides
Prime Lab Peptides — research-peptide purity specifications and certificates of analysis.
View Source ↗