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Growth HormonePhase IIIBeginner

Sermorelin

Sermorelin Acetate (GRF 1-29 NH2)

Also known as: Geref, GRF 1-29, Sermorelin Acetate

Overview

A 29-amino acid GHRH analog representing the shortest fully functional fragment of native GHRH. It was previously FDA-approved for diagnosing and treating GH deficiency in children before being discontinued for commercial reasons.

Half-Life
10-20 minutes
Typical Dose
200–500 mcg
Frequency
once daily before bed
Cycle Length
3-6 months

Administration

Subcutaneous

Benefits

  • Restores natural GH pulsatility
  • Improves sleep quality and deep sleep duration
  • Supports healthy body composition
  • Well-established safety profile from clinical use
  • May improve skin elasticity and bone density over time

Side Effects

  • Injection site pain or redness
  • Facial flushing
  • Headache
  • Dizziness

Mechanism of Action

  • Binds GHRH receptors on anterior pituitary somatotrophs to stimulate GH synthesis and secretion
  • Preserves the natural negative feedback loop of the GH-IGF-1 axis
  • Promotes GH release that follows the endogenous pulsatile pattern

Contraindications

  • Active malignancy
  • Hypersensitivity to sermorelin or mannitol
  • Pregnancy or breastfeeding
  • Obesity-related GH suppression may reduce efficacy

Storage & Reconstitution

Store unreconstituted vials at 2–8°C (36–46°F). Once reconstituted, refrigerate and use within 14 days. Do not freeze reconstituted solution.

Common peptide amounts:3 mg6 mg9 mg

Research Summary

Sermorelin was FDA-approved in 1997 under the brand name Geref for pediatric GH deficiency diagnosis and treatment. Clinical trials demonstrated its ability to restore physiologic GH secretion patterns. It was voluntarily withdrawn from market in 2008 for commercial reasons, not safety concerns, and remains available through compounding pharmacies.

Commonly Stacked With

Growth HormoneIpamorelin
Growth HormoneGHRP-6
Growth HormoneGHRP-2

This information is for educational purposes only. Always consult a qualified healthcare professional before using any peptide.