GHRP-6 is a synthetic hexapeptide that stimulates the release of growth hormone from the pituitary gland. It is typically administered subcutaneously three times daily on an empty stomach to maximize its effects. Dosing gradually increases over an 8-12 week cycle, with careful attention to reconstitution and injection technique.
- Functions as a ghrelin mimetic to stimulate GH release.
- Requires reconstitution with 3.0 mL of bacteriostatic water for a 0.67 mg/mL concentration.
- Administered subcutaneously three times daily on an empty stomach.
- Dosing starts low and gradually increases over 8-12 weeks.
- May increase appetite due to its ghrelin-mimicking properties.
Reconstitution
Vial strength
2 mg
Bacteriostatic water
3 mL
Concentration
0.67 mg/mL
1 unit = 0.01 mL = 6.7 mcg
- 1Draw 3.0 mL of bacteriostatic water using a sterile syringe.
- 2Slowly inject the bacteriostatic water down the inside wall of the GHRP-6 vial to avoid bubbling.
- 3Do not shake the vial; gently swirl or roll it until the powder is fully dissolved.
- 4Label the reconstituted vial with the date and concentration. Store in the refrigerator.
- 5For optimal potency, use the reconstituted peptide within 7 days.
Dosing schedule
| Phase | Dose | On a U-100 syringe |
|---|---|---|
| Weeks 1-2 | 100 mcg per injection (300 mcg daily total) | 15 units (0.15 mL) per injection |
| Weeks 3-4 | 200 mcg per injection (600 mcg daily total) | 30 units (0.30 mL) per injection |
| Weeks 5-12 | 300 mcg per injection (900 mcg daily total) | 45 units (0.45 mL) per injection |
Protocol detail
| Start | Begin with 100 mcg per injection, three times daily (300 mcg total daily) for Weeks 1–2. |
|---|---|
| Increase | Advance to 200 mcg per injection, three times daily (600 mcg total daily) for Weeks 3–4. |
| Target | Reach 300 mcg per injection, three times daily (900 mcg total daily) for Weeks 5–12. |
| Timing | Administer injections on an empty stomach, separating each dose by at least 4 hours. Wait 30 minutes after injecting before consuming food. |
| Cycle Length | Follow the protocol for 8–12 weeks. Remember to rotate injection sites regularly to prevent irritation. |
Overview at a glance
| Goal | To stimulate pulsatile Growth Hormone (GH) release to support muscle growth, fat loss, and recovery. |
|---|---|
| Schedule | Three subcutaneous injections daily for 8–12 weeks, with injections spaced at least 4 hours apart. |
| Dose Range | 100–300 mcg per injection, gradually titrated over the cycle (300–900 mcg total daily). |
| Reconstitution | Reconstitute each 2 mg vial with 3.0 mL of bacteriostatic water to achieve a concentration of approximately 0.67 mg/mL for precise unit measurements. |
| Storage | Lyophilized peptide should be frozen. Reconstituted peptide should be refrigerated and used within 7 days. |
How it works
GHRP-6 acts as a synthetic ghrelin mimetic, binding to the growth hormone secretagogue receptor (GHS-R1a) in the pituitary and hypothalamus. This binding triggers the pulsatile release of growth hormone (GH) from somatotroph cells and reduces the inhibitory effect of somatostatin on GH secretion. Unlike continuous GH administration, GHRP-6 maintains the body's natural feedback loops, ensuring GH levels remain within a physiological range. Beyond its endocrine effects, GHRP-6 interacts with the CD36 receptor, activating cell-survival pathways like PI3K/Akt, which helps protect tissues from oxidative stress and inflammation, contributing to its observed benefits in various preclinical models, including cardioprotection, neuroprotection, and anti-fibrotic effects.
Reported effects
- Supports muscle growth and reduces fat mass
- Enhances recovery and improves sleep quality
- Stimulates appetite (potentially beneficial for weight gain)
- Exhibits tissue-protective properties
- May improve joint and connective tissue health
Reported side effects
- Transient mild increases in cortisol and ACTH
- Increased appetite
- Potential water retention
- Injection-site reactions (redness, itching, swelling)
- Possible temporary dizziness or flushed feeling
Storage
Lyophilised (unmixed)
Store at -20 °C (-4 °F) in dry, dark conditions, ideally with desiccant.
After reconstitution
Refrigerate at 2-8 °C (35.6-46.4 °F) and use within 7 days. Protect from light. Do not refreeze.
Supplies
| Peptide vials | Approximately 32 vials of 2 mg GHRP-6 for a 12-week protocol with gradual titration. |
|---|---|
| Insulin Syringes (U-100) | Around 252 syringes for 12 weeks of three-times-daily injections (recommend 3 x 100-count boxes). |
| Bacteriostatic Water | Approximately 10 x 10 mL bottles needed for 32 vials (3.0 mL per vial). |
| Alcohol Swabs | Roughly 504 swabs for 12 weeks (2 per injection × 3 daily × 7 days), recommend 6 x 100-count boxes. |
Important notes
- Use a new sterile insulin syringe for each injection and dispose of it properly in a sharps container.
- Rotate injection sites frequently (abdomen, thighs, upper arms) to minimize tissue irritation.
- Inject slowly and allow a few seconds before withdrawing the needle.
- GHRP-6 can increase appetite due to its ghrelin-like activity.
- Maintain detailed records of daily doses, timing, and injection sites.
Frequently asked questions
Why is GHRP-6 injected three times daily?
GHRP-6 has a short half-life of about 2.5 hours, so multiple daily injections are more effective than a single dose for maintaining sustained elevation of growth hormone levels throughout the day.
Does GHRP-6 need to be injected on an empty stomach?
Yes, to maximize growth hormone release, each injection should be administered on an empty stomach, ideally 2-3 hours after eating and 30 minutes before your next meal.
What happens if I don't rotate injection sites?
Failing to rotate injection sites can lead to localized issues like lipohypertrophy (fat accumulation under the skin) and general skin irritation, which can affect absorption and comfort.
Can GHRP-6 increase my appetite?
Yes, GHRP-6 functions as a ghrelin mimetic, and ghrelin is known as the 'hunger hormone.' Therefore, it can stimulate appetite in some users, which might be beneficial for those aiming for weight gain.
Educational reference only. These figures summarise how GHRP-6 is commonly described in research literature and supplier documentation, including the GHRP-6 listing at peptidesuk4u.co.uk. They are not a prescription, not medical advice, and not a recommendation to self-administer anything.
Related protocols
GHRP-6 (10 mg Vial)
Mimics ghrelin to stimulate growth hormone release.
GHRP-6 (5 mg Vial)
Stimulates growth hormone release for muscle, fat loss, and recovery.
CJC-1295 DAC (2 mg Vial)
Long-acting GHRH analog for sustained growth hormone release.
Ipamorelin (10 mg Vial)
Selective growth hormone secretagogue for lean mass and recovery.