Sermorelin
An older growth-hormone-releasing peptide with a long clinical history.
The original GHRH fragment.
Sermorelin is the active 1-29 fragment of GHRH and one of the longest-used GH peptides. It was an approved drug for decades before being discontinued commercially, and is now widely prepared by compounding pharmacies.
At a glance
Where the research focuses.
GH stimulation
Raises the body's own GH through a short, natural pulse.
Paediatric GH testing
Historically used to assess growth-hormone deficiency.
Recovery & sleep
GH pulses tie into deep sleep and tissue recovery.
Anti-ageing GH support
Popular in compounded protocols for age-related GH decline.
A familiar, gentle pulse.
Sermorelin stimulates the body's own GH in a short, natural pulse rather than flooding the system - the reason it has a long track record and a gentle reputation.
Its branded form was discontinued for commercial reasons, not safety, and it remains widely compounded.
Strength of the evidence.
- Decades of clinical use
- GH-stimulation mechanism established
- Body-composition and sleep signals
- Compounded clinical experience
- Anti-ageing outcome claims
- Long-term healthy-adult data
How it works
GHRH receptor
Agonist driving a physiological GH pulse.
EstablishedShort action
Clears quickly, preserving natural rhythm.
CharacterisedIGF-1 axis
Modest downstream IGF-1 rise.
DocumentedTolerability
Long, generally favourable safety record.
ClinicalHow it moves through the system
Reconstitution calculator
How much diluent to mix into the vial, and the concentration that results. The suggested volume reaches a clean working stock; the calculator does the arithmetic from figures you enter. These describe solution preparation for research handling — not instructions for use in humans or animals.
Signs of a quality compound
Sermorelin's branded form (Geref) was discontinued for commercial reasons. It is now compounded and sold as a research material, and is prohibited in competitive sport. Its long history is a point in its favour.
- For research purposes only
- Not for human consumption
- Not FDA approved
- Consult a qualified professional










