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For research and educational purposes only. Not intended for human consumption.

Sermorelin

Well Researched
Updated Dec 2025

GHRH 1-29 Analog | Growth Hormone Releasing Hormone

InjectableNasal
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200-300mcg
Once daily
Injectable
Lower abdomen (avoid navel)
3-6 months
Typical duration
2-8°C
Refrigerated

Overview

What is Sermorelin?

Sermorelin acetate is a 29-amino acid synthetic analog of human growth hormone-releasing hormone (GHRH), FDA-approved in 1997 for pediatric growth hormone deficiency (discontinued 2008 for manufacturing reasons, not safety). Research continues to explore its effects on body composition, cognitive function, and metabolic health in adults, with studies showing 1.26kg lean mass gains in elderly subjects over 16 weeks. Banned by WADA

Key Benefits

FDA-proven efficacy, 6% bioavailability, maintains natural GH pulses, preserves pituitary function. Research shows potential to 'partially ameliorate' cognitive declines from GH/IGF-1 deficiency. Available through compounded formulations with prescription.

Mechanism of Action

Subcutaneous injection provides optimal bioavailability with rapid onset (5-20 minutes) and physiological pulsatile GH stimulation. Works by enhancing body's natural hormone production rather than replacing hormones directly, considered safer alternative to direct HGH therapy.

Molecular Information

3,358 Da
Weight
29
amino acids
GHRH analog
Type
Amino Acid Sequence:
Tyr-Ala-Asp-Ala-Ile-Phe-Thr-Asn-Ser-Tyr-Arg-Lys-Val-Leu-Gly-Gln-Leu-Ser-Ala-Arg-Lys-Leu-Leu-Gln-Asp-Ile-Met-Ser-Arg
* First 29 amino acids of native GHRH with therapeutic efficacy

Pharmacokinetics

Peak
10 min
Half-life
12 min
Cleared
~1 hr
100%50%0%0h6h12h18h24h
Peak
Half-life
Cleared
FDA Geref Label (discontinued)

Research Indications

Lean Body Mass Enhancement

1.26 kg lean mass increase documented in elderly men with improved muscle strength tests.

IGF-1 Mediated Growth

Stimulates endogenous IGF-1 production leading to muscle protein synthesis.

Athletic Performance Support

Enhanced recovery and muscle development through physiological GH stimulation.

Research Protocols

Disclaimer: Sermorelin was FDA-approved but discontinued for manufacturing reasons, not safety concerns. These are commonly discussed protocols. Consult a healthcare provider before use.

GoalDoseFrequencyRoute
Anti-aging/Longevity200-300mcg dailyOnce at bedtimeSubcutaneous injection
Athletic Performance300-500mcg dailyOnce at bedtimeSubcutaneous injection
Pediatric GH Deficiency30mcg/kg dailyOnce at bedtimeSubcutaneous injection
Body Composition200mcg daily5 days weeklySubcutaneous injection
Combination Therapy200mcg + GHRPOnce dailySubcutaneous co-injection

Timing: Bedtime administration aligns with natural nocturnal GH pulses. Avoid food 2+ hours before injection as carbohydrates blunt GH response.

Peptide Interactions

How to Reconstitute

Important: Always use bacteriostatic water (BAC). Sterile technique is essential.

1

Allow sermorelin vial to reach room temperature before reconstitution

2

Clean vial top with alcohol swab and allow to dry

3

Inject 3mL bacteriostatic water slowly against vial wall (not directly onto powder)

4

Gently swirl vial in circular motion - do not shake vigorously to avoid foaming

5

Allow to sit for 2-3 minutes until powder completely dissolves into clear solution

6

Store reconstituted solution at 2-8°C and use within 10-30 days

7

Inject subcutaneously at 45-degree angle rotating sites

Dosing Calculator

Calculate your injection volume with visual dosing guide

FINAL CONCENTRATION
2.50mg/mL
Each milliliter contains 2.50 mg of peptide
VISUAL REFERENCE (RESEARCH USE ONLY)

To obtain 250 mcg from this solution:

Draw 0.10 mL=10 units

(1 mL = 100 units on any insulin syringe)

0102030405060708090100
00.10.20.30.40.50.60.70.80.91.0
0.10 mL
10 units

Draw to this mark for 250 mcg

This calculator is for research purposes only. Always verify calculations and consult protocols.

Quality Indicators

Clear Reconstituted Solution

Should be completely clear and colorless without particles, cloudiness, or precipitation.

Pharmaceutical Grade Purity

Greater than 98% peptide purity per USP standards.

Proper Cold Chain Storage

Maintained at 2-8°C throughout transport with protection from light.

FDA-Registered Manufacturing

Produced in FDA-registered facilities following cGMP.

Cloudy or Discolored Solution

Any cloudiness, particles, or color changes indicates degradation.

Room Temperature Exposure

Brief room temperature exposure acceptable up to 72 hours but should be refrigerated promptly.

What to Expect

  • Week 1-2: IGF-1 levels begin to rise, possible improved sleep quality
  • Week 2-4: Enhanced body composition changes begin, increased energy
  • Week 4-8: Visible muscle tone improvements, fat reduction, skin quality enhancement
  • Week 8-12: Sustained body composition improvements, optimal IGF-1 elevation
  • Month 3-6: Maximum benefits including muscle growth, fat loss, and anti-aging effects

Side Effects & Safety

Side Effects

  • Monitor thyroid function - 6.5% develop hypothyroidism requiring hormone replacement
  • Check IGF-1 levels monthly initially, then every 3-6 months long-term
  • Injection site reactions occur in 16.7% of patients but are generally mild
  • Contraindicated in active malignancy, pituitary tumors, and pregnancy

When to Stop

  • Signs of infection at injection site
  • Thyroid function abnormalities
  • Active cancer diagnosis
  • Pituitary issues
  • Consult healthcare provider

References

4 Studies

Elderly Body Composition Study (1997)

Human | 19 adults 55-71 years | 16 weeks | Nightly injections | +1.26kg lean mass (males), elevated IGF-1 within 2 weeks

Study showing sermorelin can increase lean body mass and reduce body fat in elderly. Male subjects averaged nearly 3 pounds of lean mass gains with significantly elevated IGF-1 levels.

Cognitive Function Research

Elderly subjects | Several months nightly injections | Partial cognitive amelioration

Research in Dialogues in Clinical Neuroscience demonstrated preliminary evidence that sermorelin could 'partially ameliorate' cognitive declines stemming from deficient growth hormone and IGF-1 levels.

FDA Approval Study - Pediatric GH Deficiency

Children | 30mcg/kg daily | 36 months | 110 prepubertal GH-deficient children

Pivotal Geref International Study Group trial demonstrating sustained efficacy. Height velocity improved from 4.1 to 8.0 cm/year over 36 months of treatment.

View Study

Quick Start Guide

Typical Dose
200-300mcg daily
How Often
Once at bedtime (align with natural GH pulse)
Where to Inject
Lower abdomen (avoid navel)
Timing
Bedtime administration 2+ hours after last meal
Effects Timeline
IGF-1 elevation: 1-2 weeks; Body composition: 4-8 weeks; Full benefits: 3-6 months
Storage
Lyophilized: 2-8°C up to 3 years; Reconstituted: 2-8°C for 10-30 days
Cycle Length
3-6 months continuous use
Break Between
1-3 months off between cycles

Research Disclaimer

Sermorelin is sold for laboratory research purposes only and is not intended for human or animal consumption. The information provided on this page is compiled from published research, veterinary studies, and anecdotal reports for educational purposes. This content does not constitute medical advice, diagnosis, or treatment recommendations. Any research involving Sermorelin must comply with all applicable local, state, and federal regulations. BioInfinity Lab makes no claims regarding the safety or efficacy of Sermorelin for any purpose. Consult qualified professionals for any research applications.