What is the dosing range for Sermorelin?

Sermorelin is typically dosed at 100mcg (low), 200mcg (moderate), or 500mcg (high) mcg, administered once daily (before sleep). These ranges are aggregated from preclinical research and community protocols — not medical dosing guidance.

What are the reported side effects of Sermorelin?

Reported side effects of Sermorelin include: Injection site redness, Headache, Flushing, Dizziness, Sleepiness (often desired effect).

Performance

Sermorelin

Also known as: GHRH 1-29, GRF 1-29 NH2, Geref

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Sermorelin was FDA-approved for pediatric GH testing (Geref) but is no longer commercially manufactured. Compounded versions are used off-label in adults. For informational purposes only.

📚 Content aggregated from:1 peer-reviewed source·r/Peptides community·PubMed / NCBI

Overview

Sermorelin is a synthetic analog of the first 29 amino acids of GHRH (Growth Hormone-Releasing Hormone). It was FDA-approved for pediatric GH deficiency diagnosis and is widely used off-label in anti-aging and performance medicine. It stimulates pulsatile GH release more physiologically than exogenous GH.

Research Summary

Sermorelin works by binding pituitary GHRH receptors to stimulate GH secretion within the body's natural feedback loop. Unlike synthetic GH, it does not suppress endogenous production. Clinical studies show improved body composition, sleep quality, and IGF-1 levels in GH-deficient adults. Its short half-life (~10 min) means it requires daily dosing.

Dosing Range

low

100mcg

moderate

200mcg

high

500mcg

Units: mcg · Frequency: once daily (before sleep)

Dosing ranges are aggregated from preclinical research and community protocols. Not medical dosing guidance.

Administration Routes

Subcutaneous injection

Reconstitution Notes

Reconstitute with bacteriostatic water. Common concentration: 3mg per 3mL. Stable 30 days refrigerated. Sensitive to light — store in opaque container.

Step-by-step reconstitution guide →

Supplies you'll need

Insulin Syringes (U-100)Reconstitution Needles Lambda BAC Water Alcohol Prep Pads

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Reported Side Effects

Injection site redness
Headache
Flushing
Dizziness
Sleepiness (often desired effect)

Research Papers

1 peer-reviewed source

Sermorelin stimulates GH secretion in healthy adults

Journal of Clinical Endocrinology & Metabolism1993

Community Experiences

Aggregated from public forums. Anecdotal — not clinical evidence.

r/Peptides

Community logs on sermorelin monotherapy vs CJC/Ipa combo for GH optimization.

View original thread

Overview

Sermorelin was the first GHRH peptide approved by the FDA (1990s) for diagnostic testing of GH deficiency in children. Its clinical track record makes it one of the better-studied secretagogues, though its shorter half-life compared to CJC-1295 means more frequent dosing.

vs. CJC-1295 and Tesamorelin

| Peptide | Half-life | Clinical Data | Dosing | |---------|-----------|---------------|--------| | Sermorelin | ~10 min | Moderate | Daily SubQ | | CJC-1295 | ~8 days | Limited | Weekly | | Tesamorelin | ~26 min | Extensive (FDA trial) | Daily SubQ |

Sermorelin is often the entry-point GHRH peptide due to its established safety profile and lower cost.

Sleep and GH Pulse

GH is predominantly released during deep sleep (slow-wave). Sermorelin dosed 30–60 minutes before sleep aligns with this natural pulse window, amplifying the physiological release without creating supraphysiological patterns.