⭐Popular

Sermorelin

Also known as: Geref, GRF 1-29

Anti-AgingPerformanceMuscle Growth
Not FDA Approved

Primary recreational use: Anti-aging and muscle growth

What is Sermorelin?

Sermorelin is a synthetic analog of the natural Growth Hormone Releasing Hormone (GHRH), originally developed for pediatric growth hormone deficiency. Though previously FDA-approved, it was discontinued for manufacturing reasons but continues to be used off-label, particularly for adult hormone optimization. It primarily stimulates the body's own production of growth hormone, maintaining natural pulsatile release and feedback mechanisms.

Primary Benefits

Improves sleep quality. Increases lean body mass. Enhances recovery.

How It Works

Sermorelin works by binding to GHRH receptors in the anterior pituitary, stimulating the release of endogenous growth hormone. This maintains the body's natural feedback loops and mimics physiological GH pulsatility, leading to increased lean body mass and improved recovery.

Safety Tips

Precautions reported in community discussions and literature. This is not a complete list.

  • 1.DON'T start with a high dose - begin with the lowest effective dose to assess tolerance.
  • 2.NEVER inject within 2 hours of eating, as food can blunt the GH response.
  • 3.AVOID using if you have active malignancy or pituitary tumors.
  • 4.DON'T neglect rotating injection sites to prevent tissue damage.
  • 5.NEVER share needles or vials to avoid infections.
  • 6.DON'T store at room temperature for long periods; refrigerate after reconstitution.
  • 7.AVOID use during pregnancy or if planning to become pregnant.
  • 8.DON'T ignore signs like allergic reactions or severe side effects - seek medical help.
  • 9.DON'T use if you have untreated hypothyroidism.
  • 10.DON'T exceed recommended cycle lengths without consulting a healthcare provider.

Who Should NOT Use

  • Active malignancy
  • Pituitary tumors
  • Pregnancy
  • Untreated hypothyroidism

Use Contexts

Different purposes have different protocols, dosing, and considerations

⚕Off-Label Medical

Adult hormone optimization

moderate evidence

Used to promote GH secretion in adults to aid in anti-aging and performance enhancement by maintaining pulsatile growth hormone release.

Evidence: Primarily supported by community and clinical usage reports in adult GH optimization.

The following are ranges reported in published literature and community discussions. These are NOT recommendations or medical advice.

Reported Range
200-500 mcg
Reported Frequency
once daily
Reported Cycle
3-6 months
Reported Route
Subcutaneous

Timing: Before bed (fasted)

Notes: Administer at bedtime to coincide with natural GH release at night.

Community-Reported Protocols

Not recommendations: The following protocols are compiled from online communities and published literature. Pepbase does not endorse, recommend, or verify these protocols. They are provided for informational purposes only. Individual responses vary significantly. Consult a licensed medical professional before any use.

Reported GoalReported DoseReported FrequencyReported Route
Hormone optimization200-500 mcgOnce dailySubcutaneous injection

Pharmacokinetics

Half-Life
12 min
Time to Peak
10 min
Clearance
~1 hr

Reported Side Effects

This is not a complete list. Other side effects may occur.

Common
Facial flushingcommon (1-10%)
Injection site reactionscommon (1-10%)
Headachecommon (1-10%)
Serious / Rare
  • Allergic reactions
Injection-Specific Warnings
  • Injection site rotation necessary
  • Sterile technique required

Storage

Temperature
2-8°C
Reconstituted
2-8°C for 10-30 days
Shelf Life
Lyophilized: Up to 3 years
Light Sensitive
Yes - protect from light
⚕Off-Label Medical

Muscle growth and recovery

moderate evidence

Used to enhance muscle growth and aid in recovery by increasing IGF-1 levels and promoting protein synthesis.

Evidence: Clinical studies and user testimonials suggest beneficial effects on muscle growth parameters.

The following are ranges reported in published literature and community discussions. These are NOT recommendations or medical advice.

Reported Range
200-300 mcg
Reported Frequency
once daily
Reported Cycle
3-6 months
Reported Route
Subcutaneous

Timing: Before bed (fasted)

Notes: Consistency is key, with administration timing to match natural physiological processes.

Community-Reported Protocols

Not recommendations: The following protocols are compiled from online communities and published literature. Pepbase does not endorse, recommend, or verify these protocols. They are provided for informational purposes only. Individual responses vary significantly. Consult a licensed medical professional before any use.

Reported GoalReported DoseReported FrequencyReported Route
Muscle growth300-500 mcgOnce dailySubcutaneous injection

Pharmacokinetics

Half-Life
12 min
Time to Peak
10 min
Clearance
~1 hr

Reported Side Effects

This is not a complete list. Other side effects may occur.

Common
Joint paincommon (1-10%)
Water retentioncommon (1-10%)
Serious / Rare
  • Elevated IGF-1 levels
Injection-Specific Warnings
  • Sterile technique mandatory
  • Watch for IGF-1 elevation

Storage

Temperature
2-8°C
Reconstituted
2-8°C for 10-30 days
Shelf Life
Lyophilized: Up to 3 years
Light Sensitive
Yes - protect from light

Harm Reduction Information

Quality Concerns

  • Contamination risks with non-sterile products
  • Need for proper reconstitution with bacteriostatic water

Safety Tips

  • Follow injection schedule strictly
  • Rotate injection sites to avoid tissue damage
  • Use sterile techniques
  • Start at the lower end of dosing
  • Store in refrigerator after reconstitution

Warning Signs to Stop

  • Severe allergic reactions
  • Unusual swelling or pain at injection site
  • Persistent headaches
  • Sudden changes in vision

Seek Medical Help Immediately If

  • Difficulty breathing or swallowing
  • Signs of severe allergic reaction
  • Severe headache with vision changes

Frequently Asked Questions

Common questions about Sermorelin

How long until I see effects?

With Sermorelin, IGF-1 levels may begin to rise within 1-2 weeks, with more noticeable benefits like improved body composition typically appearing around 4-8 weeks.

What time of day should I take it?

Sermorelin should ideally be taken at bedtime on an empty stomach to align with natural GH pulses.

How can I minimize side effects?

To minimize side effects of Sermorelin, inject it subcutaneously using sterile techniques and rotate injection sites regularly.

Does tolerance develop?

Tolerance to Sermorelin can develop, hence cycles of 3-6 months on, followed by breaks, are recommended to prevent desensitization.

How should I store it?

Sermorelin should be stored in the refrigerator at 2-8°C, and reconstituted solutions should be used within 10-30 days.

Do I need to cycle it?

Cycling Sermorelin is advised, typically 3-6 months followed by a 1-3 month break, to maintain efficacy.

Reported Combinations

Compounds reported to be used alongside Sermorelin in community discussions

recreational

Ipamorelin

Enhances GH release synergistically

recreational

CJC-1295

Prolongs GH release

recreational

GHRP-2

Enhances GH release

Reported Interactions

Interactions reported in literature and community discussions.

Levothyroxine (thyroid medication)moderate

May alter effectiveness of sermorelin.

Prednisone (glucocorticoids)major

Can interfere with hormonal effectiveness.

Insulinmoderate

May affect glucose regulation when using sermorelin.

Aspirin (Cyclooxygenase inhibitors)moderate

Possible effect on GH response.

Somatostatin-containing drugsmajor

Direct interference with sermorelin's mechanism.

Reconstitution Calculator

mL
U100 insulin syringe01020304050607080901001mL

100 units = 1 mL

Safety Tips

  • Always consult a licensed medical professional for dosing and reconstitution instructions.
  • Always double check your units. Mixing up mg and mcg can be very dangerous.
  • Make sure to select your syringe type. U-100 and U-50 syringes have different units.
  • Ensure you're not adding more BAC than your vial can hold. Most vials have maximum capacities listed.

This calculator is for informational and educational purposes only. It does not provide medical advice, dosing recommendations, or safety determinations. Reference ranges shown are compiled from publicly available sources and are not a substitute for guidance from a licensed healthcare professional.

Explore More Research

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Citations

Last updated: October 5, 2023

Important Disclaimer

AI-Generated Content Notice

The information on this page has been compiled using artificial intelligence (AI) and large language model (LLM) technology from multiple sources including published literature, online communities, and public databases. This content may contain errors, inaccuracies, outdated information, or omissions. We make no guarantees regarding the accuracy, completeness, or reliability of any information presented. You are solely responsible for independently verifying any information before relying on it.

Not Medical Advice

Nothing on this website constitutes medical advice, diagnosis, or treatment recommendations. The information provided is for educational and harm-reduction purposes only. We do not provide individualized dosing guidance or treatment recommendations. Protocols and dosing information shown represent reports from community discussions and published literature—they are not endorsements or recommendations. Always consult with a licensed healthcare professional before making any health-related decisions.

No Endorsement of Use

Pepbase does not endorse, encourage, or recommend the use of any peptide or substance discussed on this website. Many compounds discussed are not approved for human use by the FDA or other regulatory agencies. Some substances may be illegal to possess, sell, or use in your jurisdiction. We do not facilitate or encourage the procurement, distribution, or use of controlled or prescription-only substances. Users are solely responsible for understanding and complying with all applicable laws in their jurisdiction.

Calculators and Tools

Any calculators, estimators, or tools provided on this website are for informational purposes only and produce estimates that may be inaccurate. Errors in calculations can result in serious harm. You are solely responsible for verifying all calculations independently. These tools do not account for individual factors that may affect dosing and should never be relied upon as a substitute for professional medical guidance.

Assumption of Risk

By using this website, you acknowledge that you understand the risks associated with using unregulated substances and that you assume full responsibility for your own health decisions. Pepbase, its creators, contributors, and affiliates disclaim all liability for any harm, injury, or damages arising from the use or misuse of information on this website. Use of any information on this site is entirely at your own risk.

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