NeuroendocrineBody CompositionRecoveryNatural GH optimizationRecovery, sleep quality, and body composition

RESEARCH REFERENCE

Sermorelin

Short-acting GHRH analog that amplifies the body’s natural growth-hormone pulses.

Quick Reference

Dose: 200–500 mcg
Frequency / schedule: Once daily (or 5–7 nights per week)
Route: Subcutaneous
Timing: 30–60 minutes before bed
Fasting: Empty stomach required (at least 1.5–2 hours after last meal)
Cycle: 3–6 months continuous or 8–12 weeks with breaks
Time off: 4 weeks off common after longer cycles
Common vial strengths: 2 mg, 5 mg, 15 mg

How this works

Sermorelin is a synthetic 29-amino-acid analog of the first 29 residues of human GHRH. It binds pituitary GHRH receptors and amplifies the natural GH pulse that occurs during early slow-wave sleep. Because it is short-acting, it must be timed carefully to coincide with the body’s own nocturnal GH surge. It does not provide continuous elevation the way CJC-1295 with DAC does.

Benefits + side effects

Potential Benefits

Supports more physiological GH release
Often improves sleep quality
Favorable recovery and body-composition effects with consistent use

Side Effects

Mild injection-site reactions
Occasional flushing or headache
Generally well tolerated

Dosing / Protocol

Reference Protocol

Phase / week	Dose	Frequency	Timing	Notes
Start	200–300 mcg	Once daily	30–60 min before bed	Assess tolerance
Standard	300–500 mcg	Once daily (or 5–7 nights/week)	30–60 min before bed	Main range

Timing + Fasting Notes

Inject 30–60 minutes before typical sleep time on an empty stomach. Finish eating at least 90–120 minutes beforehand. Food (especially carbs) significantly blunts the response.

Reconstitution

Common vial strengths2 mg, 5 mg, 15 mg

Approved preparation example
5 mg + 2 mL BAC → 2.5 mg/mL (250 mcg = 10 units)

Practical Reference

Storage: Lyophilized refrigerated; reconstituted refrigerated, use within 14–28 days
Route / injection context: Subcutaneous
Bloodwork / markers: IGF-1, fasting glucose
Common vial strengths: 2 mg, 5 mg, 15 mg
Cycle / time off: 3–6 months continuous or 8–12 weeks with breaks · 4 weeks off common after longer cycles
Practical notes: Timing relative to sleep is critical. Research use only.

References

Sermorelin: a better approach to management of adult-onset growth hormone insufficiency?Clinical Interventions in Aging · 2006

REVIEW

THE SIGNAL · SENT TWICE A MONTH

Stay ahead of the research without living on PubMed.

Peptide references, research worth knowing, new FEMETRIC tools, and meaningful testing updates. Twice a month. No daily emails.By subscribing, you agree to receive The Signal from FEMETRIC. Unsubscribe anytime.

Search Femetric