Weight
Sermorelin
Growth
29
Amino acids
Molecular weight
Peptide
Type
Sermorelin is a synthetic 29-amino acid analog of human growth hormone-releasing hormone that stimulates natural growth hormone production while preserving physiological pulsatile patterns. Originally FDA-approved in 1997 for pediatric GH deficiency, it was discontinued in 2008 for manufacturing reasons, not safety concerns.
Top researched benefits
Overview of Sermorelin
Subcutaneous injection provides optimal bioavailability for binding GHRH receptors, stimulating pulsatile GH release while maintaining hypothalamic-pituitary axis integrity and allowing natural somatostatin negative feedback.
Muscle Growth
- 1.26kg lean mass increase documented in elderly men with improved muscle strength tests.
- Endogenous IGF-1 stimulation drives protein synthesis and muscle growth.
- Enhanced recovery through physiological GH stimulation.
Antiaging
- Doubles 12-hour GH release in elderly subjects over 6 weeks.
- Decreased adiposity and improved lean mass distribution.
- Improved skin thickness and quality.
Hormonal
- Preserves natural axis function without suppression.
- Maintains physiological GH release patterns.
Storage
Reconstituted: 2-8°C, use within 10-30 days
Frequency
Once daily at bedtime (aligns with natural GH pulse)
Typical Dose
200-300mcg per dose (up to 500mcg for athletic performance)
Cycle Duration
3-6 months continuous
Chemical Makeup
Key benefits
FDA-proven efficacy
Maintains natural GH pulsatile patterns
Preserves pituitary function
1.26kg lean mass increase documented in elderly
IGF-1 mediated anabolic effects
Allows natural feedback regulation
Community interest
This peptide is still gaining traction in the community.
GHRH Analog | Growth Hormone Releasing Hormone
This overview is informational and based on aggregated descriptions from studies and user reports.
Was it helpful?YesSermorelin Molecular Information
View the scientifc details of Sermorelin.
29
Amino Acids
Sermorelin
Tyr
Tyr
Position 1
Ala
Ala
Position 2
Asp
Asp
Position 3
Ala
Ala
Position 4
?
?
Position 5
Phe
Phe
Position 6
?
?
Position 7
Asn
Asn
Position 8
Ser
Ser
Position 9
Tyr
Tyr
Position 10
Arg
Arg
Position 11
Lys
Lys
Position 12
Val
Val
Position 13
Leu
Leu
Position 14
Gly
Gly
Position 15
Gln
Gln
Position 16
Leu
Leu
Position 17
Ser
Ser
Position 18
Ala
Ala
Position 19
Arg
Arg
Position 20
Lys
Lys
Position 21
Leu
Leu
Position 22
Leu
Leu
Position 23
Gln
Gln
Position 24
Asp
Asp
Position 25
?
?
Position 26
Met
Met
Position 27
Ser
Ser
Position 28
Arg
Arg
Position 29
Molecular Weight
3357.9DaChain Length
29Amino AcidsType
PeptideSermorelin Protocols
Subcutaneous injection is the primary method. Bedtime administration aligns with natural nocturnal GH pulses. Avoid food 2+ hours before injection as carbohydrates blunt GH response.
| Goal | Dosage | Frequency | Route |
|---|---|---|---|
| Anti-aging/Longevity | 200 | 1 week range | SubQ |
| Athletic Performance | 300 | 1 week range | SubQ |
| Body Composition | 200 | 5 week range | SubQ |
| Combination Therapy | 200 | 1 week range | SubQ co-injection |
Reconstitution Instructions
Materials needed:
Steps to reconstitute
- Allow vial to reach room temperature
- Clean vial top with alcohol swab; allow to dry
- Inject 3mL bacteriostatic water slowly against vial wall (not directly on powder)
- Gently swirl in circular motion - do not shake vigorously
- Allow 2-3 minutes until powder dissolves into clear solution
- Store reconstituted solution at 2-8°C; use within 10-30 days
- Inject subcutaneously at 45-degree angle; rotate sites
Sermorelin Cycle
The Sermorelin Cycle section explains how long a typical cycle lasts and what to expect during each phase. Over time, your body can become less responsive with continuous use.
Taking breaks between cycles may help maintain effectiveness and support better overall results.
- Week 1-2
- IGF-1 elevation begins; improved sleep quality and recovery
- Week 2-4
- Body composition changes begin; increased energy and well-being
- Week 4-8
- Visible muscle tone improvements; fat reduction; skin quality enhancement
- Week 8-12
- Sustained improvements; optimal IGF-1 elevation
- Month 3-6
- Maximum benefits: muscle growth, fat loss, anti-aging effects
Dosing tools
Sermorelin Peptide Dosage Calculator
Calculate peptide doses with our visual syringe guide.
0.3mL / 30 units
5 units
0.050 mL
1 mL
2 mL
3 mL
5 mL
Custom
Conversion: 1,000 mcg = 1 mg
Injection Results
Based on your vial and dilution inputs.
Safe concentration range
Sermorelin
SINGLE COMPOUNDVolume per injection
0.05
mL
Concentration
10.00
mg/mL
Doses per vial
20
doses
Total injections per vial
20 injections
How it works
Based on a 10 mg Sermorelin vial diluted with 1 mL of bacteriostatic water, each 500 mcg injection equals 0.05 mL.
Research Purposes Only
These calculators are provided for educational and research purposes only. Always verify calculations and consult with qualified professionals. The information provided is not medical advice. Peptides should only be used in accordance with applicable laws and regulations.
Reference Guide
Dosing Cycle
- Peptide
- Sermorelin
- Dosing
- 200-300mcg per dose (up to 500mcg for athletic performance)
- Dosing Frequency
- Once daily at bedtime (aligns with natural GH pulse)
- Cycle Duration
- 3-6 months continuous
- Storage
- Reconstituted: 2-8°C, use within 10-30 days
Note: Triple agonist; microdose for fewer side effects
Reconstitution Tips
- Use bacteriostatic water (BAC) — contains 0.9% benzyl alcohol for preservation
- Inject water slowly — aim down the vial wall, not directly onto powder
- Never shake — gently swirl or roll the vial until dissolved
- Store properly — refrigerate at 2-8°C after reconstitution
- Use within 28 days — most reconstituted peptides remain stable for about 4 weeks
- Keep sterile — always clean vial tops with alcohol before drawing
Peptide Interactions
Research suggestions of Sermorelin interactions with other common peptides and substances.
Weight
ghr
Growth
GHRP-2
SYNERGISTIC
Combined GHRH+GHRP-2 produces 54-fold GH increases compared to 20-fold with GHRH alone.
Weight
ipa
Growth
Ipamorelin
SYNERGISTIC
Excellent combination producing 3-5 fold increases in GH release.
Side effects
Contraindications
Active malignancy
Pituitary tumors
Pregnancy
Stop signs
Signs of pituitary tumor growth (headaches, vision changes)
Severe injection site reactions or generalized allergic responses
Uncontrolled diabetes or significant glucose intolerance
New onset or worsening malignancy symptoms
Bad signs
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Frequently asked questions
What benefits can peptides offer in research?
Peptides can support cellular repair, immune function, metabolic health, and tissue regeneration. Research suggests they may help with recovery, sleep quality, skin health, and cognitive function, depending on the specific peptide and its mechanism of action.
What are some exciting applications of peptides in modern science?
Current research explores peptides for longevity, muscle recovery, wound healing, metabolic disorders, and neuroprotection. Scientists are also investigating peptide-based drug delivery and targeted therapies that could offer more precise treatment options.
How do peptides influence health and wellness?
Peptides work by binding to receptors on cells and triggering specific biological responses. Depending on the peptide, they may promote growth hormone release, support collagen production, modulate inflammation, or influence neurotransmitter activity—each with different implications for health and wellness.
Where can I find the latest studies on peptide applications?
Peer-reviewed journals such as Nature, Science, and specialized publications like Peptides and the Journal of Peptide Science publish ongoing research. PubMed and Google Scholar are useful for searching studies by peptide name or condition.
Are there any guidelines for using peptides in research?
Research use of peptides typically follows institutional review board (IRB) protocols and regulatory guidelines. Dosage, administration route, and safety monitoring should align with published literature and applicable regulations in your jurisdiction.
What is the difference between peptides and proteins?
Peptides are short chains of amino acids (typically under 50), while proteins are longer chains that fold into complex structures. Peptides are often more stable, easier to synthesize, and can cross cell membranes more readily, making them attractive for therapeutic applications.
How should peptides be stored?
Most peptides require refrigeration (2–8°C) and protection from light. Reconstituted peptides often have shorter stability and may need to be used within days or weeks. Always follow the manufacturer's or research protocol's storage instructions.
Can peptides be taken orally?
Some peptides are bioavailable orally, but many are broken down by digestive enzymes before reaching the bloodstream. Subcutaneous injection, nasal administration, or other routes are often used in research to improve bioavailability. The optimal route depends on the specific peptide.
SermorelinResearch References
Sermorelin is a well studied compound
Sermorelin
Sermorelin is a well studied compound
FDA Approval Study - Geref International Study Group Trial
Pivotal trial with 110 prepubertal GH-deficient children demonstrating sustained efficacy through 36 months. Height velocity increased from 4.1 to 8.0 cm/year.
1996
Adult Anti-Aging Study - Corpas et al.
Landmark study demonstrating reversal of age-related GH/IGF-1 decline in 60-78 year old males. Doubled 12-hour GH release over 6 weeks.
1992
Pharmacokinetic Profile
Comprehensive analysis showing 11-12 minute half-life and 6% bioavailability for subcutaneous administration.
1996
Body Composition in Elderly
1.26kg lean mass increase with improved muscle strength; decreased systolic BP.
1992
Nasal Administration Study
69% patient preference over injection with reliable therapeutic response at 30+ mcg/kg.
1990