Weight
GHRP-6
Growth
6
Amino acids
Molecular weight
Peptide
Type
GHRP-6 (Growth Hormone-Releasing Peptide-6) is a synthetic hexapeptide that stimulates pulsatile growth hormone secretion by acting as a ghrelin mimetic. It binds the GHS-R1a receptor at both the hypothalamic and pituitary levels, amplifying GH release in a dose-dependent manner. Used in research and by athletes for muscle growth, recovery, and anti-aging applications, it is notable for its strong appetite-stimulating side effect.
Top researched benefits
Overview of GHRP-6
GHRP-6 binds to the growth hormone secretagogue receptor 1a (GHS-R1a) and the CD36 scavenger receptor, stimulating pulsatile GH release from the anterior pituitary while also antagonizing somatostatin at the hypothalamus. This dual action amplifies GH pulse amplitude and synergizes strongly with endogenous GHRH.
growth hormone enhancement
- Potent stimulation of endogenous growth hormone release through ghrelin receptor activation.
- Indirectly increases IGF-1 levels through enhanced GH secretion from the pituitary.
body composition
- Enhanced muscle protein synthesis through elevated growth hormone and IGF-1 levels.
- Significant increase in hunger through ghrelin pathway activation, beneficial for those needing to gain weight.
- Faster recovery from exercise and improved tissue repair.
protective effects
- Research indicates protective effects on cardiac tissue independent of GH release.
- Systemic cytoprotective effects with anti-inflammatory properties observed in liver and other organs.
- Attenuation of reactive oxygen species and preservation of antioxidant defenses.
Typical Dose
100–300mcg per injection
Frequency
2–3 times daily on an empty stomach
Cycle Duration
8–12 weeks on, 4–6 weeks off
Storage
Lyophilized: store at -20°C, stable at room temperature up to 3 weeks. Reconstituted: 2–8°C for up to 7 days; avoid freeze-thaw cycles.
Chemical Makeup
Key benefits
Stimulates pulsatile GH release by fully saturating GHS-R1a receptors at 100 mcg, producing GH pulses comparable to endogenous peaks
Accelerates muscle protein synthesis and lean mass accrual through elevated GH and downstream IGF-1 signaling
Promotes connective tissue and wound healing by upregulating growth factors at injury sites, supported by preclinical cardioprotection and tissue-repair data
Enhances slow-wave (deep) sleep quality, which further amplifies endogenous GH secretion during nocturnal pulses
Community interest
This peptide is still gaining traction in the community.
GHS-R1a Agonist | GH Stimulation & Recovery
This overview is informational and based on aggregated descriptions from studies and user reports.
Was it helpful?YesNoGHRP-6 Molecular Information
View the scientifc details of GHRP-6.
6
Amino Acids
GHRP-6
His
His
Position 1
Trp
Trp
Position 2
Ala
Ala
Position 3
Trp
Trp
Position 4
Phe
Phe
Position 5
Lys
Lys
Position 6
Molecular Weight
873.032DaChain Length
6Amino AcidsType
PeptideGHRP-6 Protocols
Subcutaneous injection is the primary delivery route for GHRP-6, producing pulsatile GH release within 5–15 minutes by activating the ghrelin receptor (GHS-R1a) at the pituitary and hypothalamus. Injections into the lower abdomen or love handles on an empty stomach consistently yield the strongest GH pulse.
| Goal | Dosage | Frequency | Route |
|---|---|---|---|
| Elevate baseline GH levels and support longevity through twice-daily pulsatile stimulation at the ghrelin receptor | 100 | 2 day range | SubQ |
| Maximize anabolic GH pulses to support lean mass accrual and nutrient partitioning during a caloric surplus | 100 | 3 day range | SubQ |
| Stimulate GH-driven lipolysis while keeping the dose low enough to limit GHRP-6's pronounced appetite stimulation, which can undermine a caloric deficit | 100 | 2 day range | SubQ |
| Accelerate tissue repair and reduce recovery time by elevating GH pulses around training and sleep without fully saturating the ghrelin receptor | 150 | 2 day range | SubQ |
| Leverage GHRP-6's direct ghrelin receptor agonism to drive appetite and caloric intake in cases of cachexia or involuntary weight loss | 150 | 3 day range | SubQ |
| Approach the upper ceiling of pulsatile GH output across the day; 100 mcg per injection is the widely cited saturation dose for the ghrelin receptor — this protocol uses three 100 mcg injections for a 300 mcg total daily dose, not 300 mcg per injection | 100 | 3 day range | SubQ |
Reconstitution Instructions
Materials needed:
Steps to reconstitute
- Wash hands thoroughly and prepare a clean, flat workspace with alcohol swabs
- Remove the plastic cap from the GHRP-6 vial and swab the rubber stopper with an alcohol swab; allow to air dry
- Draw 2 mL of bacteriostatic water (BAC water) into a larger syringe using an 18–20 gauge needle
- Insert the needle into the GHRP-6 vial and inject the BAC water slowly down the inside glass wall of the vial — never squirt directly onto the powder
- Remove the needle and allow the vial to sit undisturbed for 1–2 minutes until powder dissolves
- Gently swirl the vial in a circular motion until the solution is clear — do not shake or vortex
- Label the vial with the reconstitution date and concentration (2,500 mcg/mL for a 5 mg vial in 2 mL BAC water)
- Store reconstituted vial refrigerated at 2–8°C, protected from light; use within 28–30 days
- For each injection, draw the desired dose volume using a 29–31 gauge insulin syringe (0.5–1 mL)
- Pinch a fold of skin at the injection site (lower abdomen, love handles, or upper thigh), insert the needle at a 45-degree angle, and inject slowly and steadily
- Hold the needle in place for a few seconds after injecting, then withdraw smoothly; do not aspirate for SubQ injections
- Rotate injection sites with each dose to prevent lipohypertrophy and local irritation
GHRP-6 Cycle
The GHRP-6 Cycle section explains how long a typical cycle lasts and what to expect during each phase. Over time, your body can become less responsive with continuous use.
Taking breaks between cycles may help maintain effectiveness and support better overall results.
- Week 0-0
- Intense hunger within 15-20 minutes; GH spike within 30 minutes
- Week 1-2
- Improved sleep quality and increased appetite
- Week 2-4
- Enhanced recovery and energy levels
- Week 4-8
- Noticeable changes in body composition
- Week 8-12
- Full benefits with improved muscle fullness and fat loss
Dosing tools
GHRP-6 Peptide Dosage Calculator
Calculate peptide doses with our visual syringe guide.
mg
Enter the total amount of peptide in the vial in milligrams (as stated on the label).
The dose you want to inject per administration, in mcg or mg.
1,000 mcg = 1 mg
1 mL
2 mL
3 mL
5 mL
Custom
Volume of bacteriostatic water you add to reconstitute the powder. Use BAC water for preservation.
Injection Results
Based on your vial and dilution inputs.
GHRP-6
SINGLE COMPOUNDVolume per injection
0.05
mL
Concentration
10.00
mg/mL
Doses per vial
20
doses
Total injections per vial
20 injections
How it works
Based on a 10 mg GHRP-6 vial diluted with 1 mL of bacteriostatic water, each 500 mcg injection equals 0.05 mL.
1mL / 100 units
5 units
0.050 mL
Reference Guide
Dosing Cycle
- Peptide
- GHRP-6
- Dosing
- 100–300mcg per injection
- Dosing Frequency
- 2–3 times daily on an empty stomach
- Cycle Duration
- 8–12 weeks on, 4–6 weeks off
- Storage
- Lyophilized: store at -20°C, stable at room temperature up to 3 weeks. Reconstituted: 2–8°C for up to 7 days; avoid freeze-thaw cycles.
Note: Triple agonist; microdose for fewer side effects
Reconstitution Tips
- Use bacteriostatic water (BAC) — contains 0.9% benzyl alcohol for preservation
- Inject water slowly — aim down the vial wall, not directly onto powder
- Never shake — gently swirl or roll the vial until dissolved
- Store properly — refrigerate at 2-8°C after reconstitution
- Use within 28 days — most reconstituted peptides remain stable for about 4 weeks
- Keep sterile — always clean vial tops with alcohol before drawing
Peptide Interactions
Research suggestions of GHRP-6 interactions with other common peptides and substances.
Healing
bpc
Longevity
BPC-157
COMPATIBLE
No known negative interactions; often combined for recovery protocols.
Weight
ghr
Growth
GHRP-2
COMPATIBLE
Similar mechanism; GHRP-2 is more potent with less appetite stimulation.
Weight
ipa
Growth
Ipamorelin
COMPATIBLE
Both are GHRPs; Ipamorelin has fewer side effects but is less potent.
Side effects
Contraindications
Active cancer or history of cancer
Pregnancy or breastfeeding
Pituitary disorders
Diabetes (use with caution)
WADA prohibited for competitive athletes
Stop signs
Severe or persistent headaches
Unusual swelling in hands or feet
Signs of carpal tunnel syndrome
Allergic reactions
Hypoglycemia symptoms
Bad signs
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Frequently asked questions
What is a peptide dosage calculator?
A peptide dosage calculator is a free tool that converts your vial size, bacteriostatic water volume, and target dose into an exact syringe draw volume. Instead of doing the reconstitution math by hand, you enter three inputs and instantly get the concentration of your solution and how many milliliters or syringeunits to draw. This calculator works for single peptide compounds and multi-peptide blends.
How do I calculate peptide dosage from a vial?
To calculate your peptide dose, divide the total peptide content of your vial in micrograms by the volume of bacteriostatic water you added in milliliters. This gives you your solution concentration in mcg/mL. Then divide your target dose by that concentration to get your draw volume. For example, a 5mg (5,000 mcg) vial reconstituted with 2mL of BAC water gives a concentration of 2,500 mcg/mL. A 250 mcg dose would require drawing 0.1mL. This calculator automates all of those steps instantly.
How much Bacteriostatic water should I add to a peptide vial?
Most people add 2mL to 3mL of bacteriostatic water per vial, but the right amount depends on the dose you want to draw and the syringe size you are using. Adding 1mL to a 5mg vial gives you a concentration of 5,000 mcg/mL, making each dose very small in volume. Adding 2mL gives you 2,500 mcg/mL, which is easier to measure on a standard insulin syringe. A general guideline is to choose a volume that puts your typical dose somewhere between 10 and 30 units on a U-100 syringe. Use the calculator above to test different water volumes and find what works for your dose.
How are peptides different from proteins?
Both are made of amino acids, but peptides are much smaller than proteins. Because of their tiny size, peptides can act like tiny messengers in the body, sending specific signals to your cells to tell them exactly what to do.
GHRP-6Research References
GHRP-6 is a phase 1 compound
GHRP-6
GHRP-6 is a phase 1 compound
Effects of GHRP-6 on Weight Gain and Fat Mass
Significant differences in body composition, muscle growth, glucose metabolism, memory and cardiac function in mice administered GHRP-6.
n.d.
Synthetic Growth Hormone-Releasing Peptides: Cytoprotective Effects
GHRP-6 demonstrated systemic cytoprotective effects, anti-inflammatory properties, and cardioprotective effects in multiple studies.
n.d.
GHRP-6 Clinical Safety Trial
Intravenous administration proved safe in dose scale-up clinical trial in healthy human volunteers.
n.d.
Calculate peptide dosages
Learning how to calculate a peptide dose? Use our beginner-friendly peptide dosage, blend, and accumulation calculators. Enter vial size, reconstitution volume, and target dose to get exact draw volumes instantly. No guesswork, just clear guidance that helps prevent common mistakes.
