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Sermorelin: the complete guide

Sermorelin is a truncated 29-amino-acid analog of endogenous growth-hormone-releasing hormone (GHRH). It stimulates the pituitary to release GH in a physiological, pulsatile pattern.

Written by Peptide Protocol Editorial Medically reviewed per our review process Last reviewed
ClassGrowth hormone-releasing hormone analog (GHRH 1-29)
Half-lifeApproximately 10–20 minutes
Typical dose100–500 mcg per injection, typically at bedtime 5 days per week
CategoryGH secretagogue (GHRH)
Research useAge-related GH decline research, sleep and recovery protocols
FDA statusPreviously FDA approved for pediatric GH deficiency (withdrawn in 2008 for commercial reasons, not safety). Widely compounded.

How Sermorelin works

Sermorelin binds the GHRH receptor on anterior pituitary somatotrophs, triggering natural pulsatile GH release — preserving downstream feedback loops that exogenous HGH bypasses.

Typical Sermorelin dosage

Commonly reported research ranges: 100–500 mcg per injection, typically at bedtime 5 days per week.

Dose should always be individualized. Factors that influence it include bodyweight, research goal, tolerance, and specific compound batch. The information below is educational, not a prescription.

How to reconstitute Sermorelin

A widely used reconstitution for a 3 mg vial is 2 ml of bacteriostatic water. With a typical 200 mcg dose this works out to the unit count shown in the calculator below.

Open the Sermorelin reconstitution calculator →

Pre-filled with the common 3 mg + 2 ml ratio. Adjust for your own vial.

Half-life and administration frequency

Approximately 10–20 minutes.

This half-life informs how often Sermorelin is typically dosed. Shorter half-lives usually mean more frequent dosing to maintain plasma levels; longer half-lives allow daily, weekly, or less-frequent administration depending on the compound.

Reported side effects

This list reflects effects reported in available literature or user logs. It is not exhaustive. Adverse reactions should be discussed with a qualified clinician.

Common Sermorelin stacks

Full editorial stack guides featuring Sermorelin:

Sermorelin + GHRP-2

Sleep-anchored GH pulse, users who prefer FDA-precedent compounds, clinical anti-aging protocols.

GH axisClinical

Storage and handling

Lyophilized refrigerated. Reconstituted: refrigerated 2–8 °C, use within 28 days.

FDA and regulatory status

Previously FDA approved for pediatric GH deficiency (withdrawn in 2008 for commercial reasons, not safety). Widely compounded.

Sermorelin clinical trials and evidence

For clinical-trial and primary-literature context, start with the sources below. We prioritize official drug labels, ClinicalTrials.gov records, and PubMed-indexed literature when available.

For Sermorelin, the public evidence base is summarized in the references section; not every research peptide has robust registered human clinical trials.

Track your Sermorelin protocol on iPhone

Peptide Protocol logs every dose, calculates reconstitution for you, and keeps your full protocol on one calm screen.

See the app →

Frequently asked questions

What is Sermorelin?

Sermorelin is a truncated 29-amino-acid analog of endogenous growth-hormone-releasing hormone (GHRH). It stimulates the pituitary to release GH in a physiological, pulsatile pattern.

How does Sermorelin work?

Sermorelin binds the GHRH receptor on anterior pituitary somatotrophs, triggering natural pulsatile GH release — preserving downstream feedback loops that exogenous HGH bypasses.

What is a typical Sermorelin dose?

Commonly reported ranges are 100–500 mcg per injection, typically at bedtime 5 days per week. This is research information, not a recommendation — dosing should be individualized under clinical guidance.

What is the half-life of Sermorelin?

Approximately 10–20 minutes. This influences how often it is administered.

How do you reconstitute Sermorelin?

A common approach is to add 2 ml of bacteriostatic water to a 3 mg vial. Use the reconstitution calculator for exact unit counts.

What are the side effects of Sermorelin?

Injection-site reactions (flushing, warmth); Headache; Transient dizziness; Dysphagia (rare).

Is Sermorelin FDA approved?

Previously FDA approved for pediatric GH deficiency (withdrawn in 2008 for commercial reasons, not safety). Widely compounded.

References

  1. Sermorelin (Geref) — FDA Drugs@FDA — U.S. Food and Drug Administration. Historical approval for pediatric GH deficiency; marketed status has changed but label is public record
  2. Sermorelin pharmacology literature — PubMed. Primary research on sermorelin as a GHRH(1-29) analog
  3. Walker et al. — GHRH analogs and GH secretion — PubMed. Mechanistic context for GHRH-analog stimulation of endogenous GH release

Sources listed above were used to verify the claims on this page. See our editorial policy for how we source information.

Educational use only. Peptide Protocol is an informational tool. Nothing on this page constitutes medical advice. Many peptides are prescription-only or restricted in your jurisdiction. Always consult a licensed healthcare professional before injecting any compound.