Ipamorelin

Ipamorelin is a selective growth hormone secretagogue studied for GH release, recovery support, and body-composition goals with lower off-target hormonal spillover than older GHRPs.

Profile · 01

Overview

Ipamorelin is a synthetic pentapeptide that mimics ghrelin at the growth-hormone-secretagogue receptor while being more selective than older compounds like GHRP-6. It is not FDA-approved for any indication, but it is frequently discussed in GH-optimization protocols.

Its main appeal is relative selectivity: the source emphasizes that effective doses do not meaningfully raise ACTH, cortisol, or prolactin the way some earlier secretagogues can. This page summarizes the once-daily bedtime protocol provided in the source markdown.

At a Glance

Goal

Support selective GH release, recovery, and favorable body-composition signaling

Protocol

Suggested once-daily titration approach starting low and increasing every two weeks.

Reconstitute

Add 3.0 mL bacteriostatic water to a 5 mg vial for about 1.67 mg/mL concentration

Typical daily range

100-250 mcg once daily

Start

100 mcg daily for Weeks 1-2

Target

200-250 mcg daily by Weeks 5-12

Frequency

Once per day (subcutaneous)

Cycle Length

8-12 weeks with optional extension to 16 weeks

Timing

30-60 minutes before bedtime on an empty stomach

Route

Subcutaneous

Cycle

8-12 weeks on, 2-4 weeks off

Inject once daily subcutaneously using the 3.0 mL dilution to keep low-dose measurements visible. The source treats consistent timing and empty-stomach dosing as central because the peptide has a short half-life and is meant to produce a discrete GH pulse rather than prolonged exposure.

Dose progression

Weeks 1-2

100 mcg (0.1 mg) · 6 units (0.06 mL)

Weeks 3-4

150 mcg (0.15 mg) · 9 units (0.09 mL)

Weeks 5-8

200 mcg (0.2 mg) · 12 units (0.12 mL)

Weeks 9-12

250 mcg (0.25 mg) · 15 units (0.15 mL)

Important: This guide is for educational purposes only and is not medical advice. For research use only. Not for human consumption.

Science · 01

How Ipamorelin works.

Ipamorelin binds the GH-secretagogue receptor and stimulates a discrete GH pulse with relatively little ACTH, cortisol, or prolactin spillover at typical doses. That selectivity is its main differentiator versus earlier GHRPs.

The source also notes additional GI-motility discussion from clinical development work, though GH-optimization protocols remain a different use case from those studies. Large body-composition outcome trials remain limited.

Science · 02

Effects

Observations from clinical or preclinical literature.

Supports selective GH release with relatively low off-target hormonal spillover

May support body-composition and recovery goals through GH-axis signaling

Often preferred over older GHRPs by users trying to avoid appetite or cortisol-related issues

Generally described as well tolerated at standard doses

Mild injection-site irritation or rare transient water retention may occur

Long-term human efficacy and safety remain less established than the mechanistic rationale

Science · 03

Caution

Use caution in active cancer or significant cancer history because GH-axis signaling can be growth-promoting

Not recommended during pregnancy or breastfeeding because safety data is insufficient

Use caution in diabetes or insulin resistance

Avoid use in active pituitary disorders unless directly supervised by a qualified specialist

Important: This guide is for educational purposes only and is not medical advice. For research use only. Not for human consumption.

Lifestyle · 01

CoFactors

Arginine

Often discussed alongside GH-secretagogue protocols.

Zinc

Supports GH-related signaling and immune function.

Magnesium

Supports sleep quality and recovery.

Vitamin D

Relevant to musculoskeletal and endocrine health.

B vitamins

Support energy metabolism and broader neurologic recovery.

Lifestyle · 02

Life Factors

Complementary strategies for best outcomes.

Maintain a protein-adequate diet that supports muscle recovery and metabolic adaptation

Use resistance and aerobic training to reinforce body-composition goals

Prioritize 7-9 hours of quality sleep because the protocol leans on bedtime GH pulsatility

Keep the pre-dose fasting window consistent because nutrient timing can alter response quality

Lifestyle · 03

Metrics

Day-to-day metrics worth tracking through the protocol.

Body composition - monitor lean-mass and fat-mass trends
Sleep quality and recovery - useful for bedtime GH-pulse protocols
Workout performance and soreness recovery - track changes through the cycle
Injection-site reactions - note redness, swelling, or discomfort

Lifestyle · 04

Labs

Baseline and periodic bloodwork to monitor systemic health during the protocol.

IGF-1

Primary downstream marker of GH-axis response.

Fasting glucose and HbA1c

Monitor metabolic effects of GH-secretagogue use.

CBC (Complete Blood Count)

General monitoring and baseline screening.

CMP (Comprehensive Metabolic Panel)

Assess liver and kidney function during peptide use.

Lipid panel

Useful metabolic-health context marker alongside body-composition goals.

Calculators · 01

Supplies Calculator

Estimates assume the schedule defined for this peptide.

Length

Vial size

Bac. water

Syringe

Vials

0 × 5 mg each…

Syringes

Bac. water

0 mL

Swabs

02 per syringe

Calculators · 02

Dose Calculator

Vial

Bac. water

Syringe

Dose

Concentration

0mcg/mL

Volume per dose

0mL

…

Practice · 01

Preparation

Careful technique preserves potency. Solution should be clear — do not shake.

Allow vial to reach room temperature for 15–20 minutes before reconstitution.
Draw the chosen bacteriostatic water volume with a sterile syringe.
Inject slowly down vial wall; avoid foaming.
Gently swirl/roll until dissolved (do not shake).
Label with reconstitution date and refrigerate at 2–8 °C (35.6–46.4 °F), protected from light.
Use within 30 days; discard any unused solution after 30 days.

Practice · 02

Technique

General subcutaneous guidance from clinical best-practice resources.

Clean the vial stopper and injection site with alcohol and allow them to dry fully

Pinch a skinfold and insert the needle at 45-90 degrees into subcutaneous tissue

Do not aspirate for subcutaneous injections; inject slowly and steadily

Rotate sites systematically across the abdomen, thighs, upper arms, or flank

Discard used syringes immediately in a sharps container

Important: This guide is for educational purposes only and is not medical advice. For research use only. Not for human consumption.

Practice · 03

Storage

Lyophilized

Store at room temp in dry, dark conditions; minimize moisture exposure.

Reconstituted

Refrigerate at 2–8 °C (35.6–46.4 °F); avoid freeze–thaw cycles. Discard reconstituted vials after 30 days.

Notes

Allow vials to reach room temperature before opening to reduce condensation uptake.

Reference · 01

Notes

Use a new sterile insulin syringe for each injection and dispose of it safely

Consistent bedtime timing and an empty-stomach window are core parts of this protocol design

Ipamorelin is often chosen for selectivity, not because it is clinically equivalent to prescribed GH therapy

Document dose, timing, and response trends for consistency

PepTribe is an educational platform. This information is for research and learning purposes only and is not medical advice.

Reference · 02

References

European Journal of Endocrinology / PubMed
Raun et al., early selective growth-hormone secretagogue work on Ipamorelin.
https://pubmed.ncbi.nlm.nih.gov/9916862/
Pharmaceutical Research / PubMed
Ipamorelin pharmacokinetic-pharmacodynamic modeling in human volunteers.
https://pubmed.ncbi.nlm.nih.gov/10450798/
European Journal of Anatomy
Chronic Ipamorelin treatment and sustained GH release in animal models.
https://eurjanat.com/v1/data/pdf/eja.02S10053.pdf
International Journal of Colorectal Disease
Phase II trial context for postoperative ileus and GI motility.
https://pubmed.ncbi.nlm.nih.gov/24777350/
CDC
Subcutaneous injection route guidance.
https://www.cdc.gov/vaccines/hcp/admin/downloads/YCTS-VaxAdmin-Subcut-injection.pdf