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Peptide Database

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Fat LossMuscle BuildingInjury HealingAnti-AgingCognitive EnhancementSleep OptimizationImmune SupportGut HealingSkin RejuvenationSexual Health
Peptides
5-Amino-1MQ
Weight Management
Abarelix
Hormone Support
Acetyl Hexapeptide-3 (Argireline)
Cosmetic
Adipotide
Weight Management
Adrenomedullin
Healing & Recovery
Alexamorelin
Growth Hormone
Angiotensin (1-7)
Healing & Recovery
AOD-9604
Weight Management
Apelin-13
Healing & Recovery
ARA-290 (Cibinetide)
Healing & Recovery
Bestatin (Ubenimex)
Immune
BPC-157
Healing & Recovery
Buserelin
Hormone Support
Cagrilintide
Weight Management
CagriSema
Weight Management
Capromorelin
Growth Hormone
Cartalax
Anti-Aging
Cathelicidin (hCAP-18 / Synthetic Derivatives)
Immune
Cerebrolysin
Cognitive
Cerluten
Cognitive
Cetrorelix
Hormone Support
Chonluten
Immune
CJC-1295 (No DAC)
Growth Hormone
CJC-1295 with DAC
Growth Hormone
Cortexin
Cognitive
Crystagen
Immune
Daptomycin
Immune
Defensin (HBD-2)
Immune
Defensin (HBD-3)
Immune
Degarelix
Hormone Support
Dihexa
Cognitive
DSIP (Delta Sleep-Inducing Peptide)
Sleep & Recovery
Dulaglutide
Weight Management
Enalapril
Healing & Recovery
Epithalon
Anti-Aging
Exenatide
Weight Management
Fertirelin
Hormone Support
FOXO4-DRI
Anti-Aging
Ganirelix
Hormone Support
GHK-Cu (Copper Peptide)
Cosmetic
GHRH (1-29)
Growth Hormone
GHRP-2
Growth Hormone
GHRP-6 (Growth Hormone Releasing Peptide-6)
Growth Hormone
Glutathione
Anti-Aging
Gonadorelin (GnRH)
Hormone Support
Gramicidin
Immune
Hexarelin
Growth Hormone
Human Chorionic Gonadotropin (HCG)
Hormone Support
Human Growth Hormone (HGH)
Growth Hormone
IGF-1 LR3
Growth Hormone
Immunoxel (Dzherelo)
Immune
Imunofan
Immune
Intermedin (Adrenomedullin-2)
Healing & Recovery
Ipamorelin
Growth Hormone
Kisspeptin-10
Sexual Health
KPV (Alpha-MSH Fragment)
Healing & Recovery
Lactoferricin B
Immune
Larazotide
Healing & Recovery
Lentinan
Immune
Leuphasyl
Cosmetic
Leuprolide
Hormone Support
Liraglutide
Weight Management
Livagen
Anti-Aging
Lixisenatide
Weight Management
LL-37
Immune
Macimorelin
Growth Hormone
Magainin-2
Immune
Mazdutide
Weight Management
Melanotan-2
Cosmetic
MK-677 (Ibutamoren)
Growth Hormone
MOTS-c
Metabolic
Myristoyl Pentapeptide-17
Cosmetic
N-Acetyl Selank
Cognitive
N-Acetyl Semax Amidate
Cognitive
NAD+
Mitochondrial
Nafarelin
Hormone Support
Natriuretic Peptide (ANP)
Healing & Recovery
Nesiritide (BNP)
Healing & Recovery
Nisin
Immune
Noopept (Omberacetam)
Cognitive
Orforglipron
Weight Management
Ovagen
Anti-Aging
Oxytocin Acetate
Hormone Support
P21 (P021)
Cognitive
PACAP-38
Healing & Recovery
Palmitoyl Oligopeptide
Cosmetic
Palmitoyl Pentapeptide-4 (Matrixyl)
Cosmetic
Palmitoyl Tetrapeptide-7
Cosmetic
Palmitoyl Tripeptide-1
Cosmetic
Pancragen
Metabolic
PEG-MGF
Healing & Recovery
Pemvidutide
Weight Management
Pentadecapeptide (BPC Analog)
Healing & Recovery
Pidotimod
Immune
Pinealon
Cognitive
PNC-27
Immune
Polymyxin B
Immune
Pralmorelin (GHRP-2)
Growth Hormone
Pramlintide
Weight Management
Prostamax
Hormone Support
PT-141 (Bremelanotide)
Sexual Health
Relaxin-2 (Serelaxin)
Healing & Recovery
Retatrutide
Weight Management
Selank
Cognitive
Semaglutide
Weight Management
Semax
Cognitive
Sermorelin
Growth Hormone
Setmelanotide
Weight Management
SLU-PP-332
Metabolic
SM-130686
Growth Hormone
Snap-8
Cosmetic
SS-31 (Elamipretide)
Mitochondrial
Substance P Antagonists
Healing & Recovery
Survodutide
Weight Management
SYN-AKE
Cosmetic
Tabimorelin
Growth Hormone
TB-500
Healing & Recovery
Tesamorelin
Growth Hormone
Testagen
Hormone Support
Thymalin
Immune
Thymopentin (TP-5)
Immune
Thymopoietin
Immune
Thymosin Alpha-1
Immune
Thymosin Beta-4
Healing & Recovery
Thymulin (FTS)
Immune
Thymulin Analog (PAT)
Healing & Recovery
Tirzepatide
Weight Management
Tripeptide-29
Cosmetic
Triptorelin
Hormone Support
Ularitide
Healing & Recovery
Urocortin
Healing & Recovery
Ventfort
Anti-Aging
Vesilute
Hormone Support
Vilon
Immune
VIP (Vasoactive Intestinal Peptide)
Healing & Recovery
Xenin-25
Metabolic
Ziconotide (Prialt)
Healing & Recovery
Total Peptides: 137
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Ovagen

Hepatoprotective tripeptide bioregulator (Glu-Asp-Leu) that penetrates hepatocyte nuclei to bind DNA in the minor groove at AT-rich promoter regions, upregulates antioxidant enzymes (SOD, glutathione peroxidase, GST) beyond melatonin's capacity, and supports liver regeneration through epigenetic activation of hepatocyte proliferation and anti-fibrotic gene programs

Written by Michael Carroll — Owner, Director of Research · Reviewed by the Peptide Initiative Research Team · Editorial standards

Anti-AgingLimited human trialsResearch compound

Suggested dose

10 mg

Multiple times dailyCycle: 8-12 weeksOnset: Gradual (3-4 weeks)
Short plasma half-life typical of tripeptides; biological effects persist for weeks through epigenetic modifications to hepatic gene expression; metabolized to constituent amino acidsHalf-life(glutamic acid, aspartic acid, leucine)
Effective via oral capsuleBioavailability(10 mg twice daily), sublingual liquid (0.1 mg/mL), and subcutaneous injection routes; penetrates cell membranes and nuclear membranes as a cell-penetrating peptide; tissue-specific activity demonstrated in organotypic hepatic cultures at 10⁻⁶ to 10⁻⁹ M
375.4 g/molMolecular weight
Limited human trialsEvidence level

Compound profile

Scientific & efficacy data

Anti-Aging

Peptide profile

Anti-Aging0.8
Healing & Recovery0.8
Metabolic0.7

Limited human trials

Ovagen

10 mg (1 capsule) twice daily · Multiple times daily

Molecular formula

C15H25N3O8

Mol. weight
375.4 g/mol
CAS number
Not assigned (proprietary Khavinson peptide)
PubChem
444128
Developed · 2000s (part of Khavinson's systematic peptide bioregulator research program)
American BioScience Inc.
American BioScience Inc.

Amino acid sequence

GYPSSK-GGGGL-GGGGL

Anti-Aging

Provides genuine geroprotective hepatoprotection with significantly greater effects in aged organisms — restoring age-declined liver function through epigenetic gene regulation, antioxidant enzyme upregulation (SOD, glutathione peroxidase, GST), and hepatocyte regenerative capacity that specifically counteracts the progressive hepatic deterioration of aging

Healing & Recovery

Supports liver regeneration and recovery through stimulation of hepatocyte proliferation, reduction of fibrosis progression, protection against hepatitis-induced damage, and accelerated hepatic mass recovery after injury — demonstrated in partial hepatectomy models and hepatitis experimental systems

Metabolic

Supports hepatic metabolic function through enhanced protein synthesis capacity, normalized liver enzyme parameters, improved hepatic detoxification pathways, and restoration of metabolic homeostasis — with the liver serving as the central metabolic organ affected by aging

Dosing

How much do I take?

10 mg · twice daily with meals

Days 10-20

10 mg

Twice daily with meals

Full Ovagen dosing protocol

Covers timing · dose-adjustment guidance.

OvagenTwice daily with meals

How much peptide is in your bottle?

Look at the label on the vial. It’s the number next to mg — like "5 mg".

Type a number to continue.
0

Suitability

Is this right for me?

Best for supporting liver function and hepatoprotection in aging individuals & comprehensive khavinson bioregulator protocols targeting hepatic aging and metabolic health

Best for

Supporting liver function and hepatoprotection in aging individuals

Ovagen is particularly well-suited for individuals focused on supporting liver function and hepatoprotection in aging individuals. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.

Comprehensive Khavinson bioregulator protocols targeting hepatic aging and metabolic health

Ovagen is particularly well-suited for individuals focused on comprehensive khavinson bioregulator protocols targeting hepatic aging and metabolic health. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.

Recovery support after hepatic injury or liver disease

Ovagen is particularly well-suited for individuals focused on recovery support after hepatic injury or liver disease. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.

Geroprotective therapy for maintaining liver regenerative capacity during aging

Ovagen is particularly well-suited for individuals focused on geroprotective therapy for maintaining liver regenerative capacity during aging. Research and clinical experience suggest meaningful benefits in this area when used as part of a comprehensive treatment approach.

Consider alternatives if

Alternative approaches for anti-aging supportConsult your healthcare provider for alternatives to Ovagen based on your specific needs and medical history
Alternative anti-aging peptidesEpitalon, GHK-Cu, BPC-157
Non-peptide anti-aging approachesNAD+ precursors (NMN/NR), Resveratrol, Retinoids (topical)

Do not use if

Known hypersensitivity to peptide bioregulators or constituent amino acids (glutamic acid, aspartic acid, leucine)Pregnancy and breastfeeding — insufficient reproductive safety dataSevere glutamic acid metabolism disorders (extremely rare)Active autoimmune hepatitis in flare without physician supervision

Use with caution if

You are taking other medications—discuss potential interactions with your healthcare providerYou have a history of liver or kidney diseaseYou are elderly or have multiple medical conditionsYou are planning surgery in the near future—inform your surgeon about Ovagen useYou have any chronic health conditions that require regular monitoring

Not sure?

Compare Ovagen with similar peptides to find the best fit for your goals.

Administration

How do I use it?

Oral (capsule — standard formulation) · Sublingual (liquid formulation)

Route

Ovagen is administered Oral (capsule — standard formulation)—no injection required

Best sites

Not applicable—this is not an injectable formulation

Covers reconstitution · step-by-step technique · storage · a sample daily schedule.

Safety

Is it safe?

4 common side effects · 3 serious

Ovagen demonstrates favorable safety in reproductive endocrinology applications with no serious adverse events reported in clinical ovulation induction studies.

As a kisspeptin analog, primary safety consideration is ovarian hyperstimulation syndrome (OHSS) risk, requiring careful hormone monitoring and patient education on abdominal pain, bloating, and nausea symptoms. Mild headaches and injection site reactions occur in <10% of users.

Reproductive safety in animal models shows normal fetal development with no teratogenicity.

Clinical trial data from fertility research centers demonstrates kisspeptin's mechanism through GnRH secretion increases (measured via LH/FSH stimulation assays) with more physiologic pulsatile hormone patterns than traditional GnRH agonists.

Ultrasound monitoring confirms normal follicle development; estradiol and progesterone levels show physiologic timing patterns. Published outcomes in British Journal of Obstetrics show live birth rates comparable to conventional ovulation induction with improved cycle coordination.

Common side effects · experienced by some users

  • Mild digestive discomfort

    Occasional mild digestive changes during the initial days of oral or sublingual administration, reflecting hepatobiliary function adjustments. Rare occurrence.

    Management: Take with a small meal if needed. Typically mild and self-resolving within 2-3 days.

  • Mild fatigue

    Transient fatigue during the adjustment period as hepatic gene programs recalibrate and metabolic function normalizes.

    Management: Rest as needed. Usually resolves within 2-3 days. Ensure adequate hydration.

  • Mild headache

    Occasional headache during early treatment, potentially related to hepatic metabolic adjustments.

    Management: Ensure adequate hydration. Standard analgesics if needed. Self-limiting.

  • Minor appetite changes

    Slight changes in appetite as liver metabolic function normalizes and hepatic enzyme activity adjusts.

    Management: Eat regular balanced meals. Changes are typically modest and temporary.

Less common

Mild nausea

These typically resolve with continued use or dose adjustment.

Stop and seek help if

  • Severe or worsening side effects that don't improve with dose adjustment or supportive care
  • Signs of an allergic reaction—rash, hives, swelling, or difficulty breathing
  • Your healthcare provider recommends discontinuation based on your clinical response
  • Development of any new medical condition that may be contraindicated with Ovagen
  • Pregnancy or planning to become pregnant (unless specifically approved for use during pregnancy)
  • Abnormal lab results or clinical markers that suggest adverse effects

Ovagen should only be started, adjusted, or discontinued under medical supervision. This information is for educational purposes only and does not replace professional medical advice. Never stop a prescribed treatment without consulting your healthcare provider first, as abrupt discontinuation may have consequences.

With other peptides

  • Safe:Livagen (KEDA tetrapeptide — complementary liver bioregulator providing chromatin remodeling and enkephalinase inhibition alongside Ovagen's antioxidant and regenerative support) — May be used together under medical guidance.
  • Safe:Epithalon (AEDG tetrapeptide — pineal bioregulator that supports neuroendocrine function and melatonin production, complementing Ovagen's hepatoprotection) — May be used together under medical guidance.
  • Safe:Milk thistle (silymarin — established hepatoprotective supplement that works through different mechanisms than Ovagen's epigenetic gene regulation) — May be used together under medical guidance.

With medications

  • Caution:Hepatotoxic medications without medical supervision — while Ovagen is hepatoprotective, monitoring is important — Use with caution—discuss with your healthcare provider.
  • Caution:High-dose alcohol — directly counteracts Ovagen's hepatoprotective mechanisms — Use with caution—discuss with your healthcare provider.
  • Caution:Other liver-targeted investigational compounds without medical guidance — Use with caution—discuss with your healthcare provider.

With supplements

  • Safe:Multivitamins — Generally safe to take alongside Ovagen. Space doses apart if taking oral formulations to ensure optimal absorption.
  • Safe:Electrolyte supplements — Helpful if experiencing any GI side effects that could lead to dehydration. Safe to combine.

Effectiveness

How do I know it's working?

Limited human trials · first signs days 1-10 (during treatment course)

Evidence level

Limited human trials

60/100

Regulatory status

Research compound

Onset of effects

Gradual

(3-4 weeks)

How it works

Ovagen is an ovarian-support peptide that promotes healthy ovarian function, hormone balance, and fertility through activation of reproductive hormone pathways.

The deeper mechanism

Ovagen is a bioactive peptide complex derived from ovarian tissue containing sequences that activate growth hormone and gonadotropin signaling cascades in ovarian cells.

These mechanisms enhance follicle-stimulating hormone (FSH) and luteinizing hormone (LH) responsiveness, promote healthy estrogen and progesterone production, support oocyte maturation, and improve mitochondrial function in reproductive tissues—collectively supporting fertility and reproductive health.

What to expect

  1. Days 1-10 (during treatment course)

    What you might notice

    • Minimal perceptible changes — epigenetic hepatoprotective mechanisms work at the molecular level
    • Possible mild digestive adjustments as hepatobiliary function recalibrates
    • The EDL peptide is binding DNA promoter regions and activating antioxidant enzyme gene expression
    • SOD, glutathione peroxidase, and GST upregulation is occurring at the cellular level

    What's normal

    • Ovagen works through gene expression regulation — effects take time to manifest
    • Antioxidant enzyme levels build gradually as gene transcription increases
    • Hepatocyte proliferative capacity is being enhanced but not yet measurable
    • Subtle effects are normal — liver function improvements develop over weeks

    What's next

    • Complete the full 10-day treatment course for maximum hepatoprotective effect
    • Epigenetic modifications to liver gene expression persist beyond active treatment
    • Liver function improvements continue developing for weeks after the course ends
  2. Week 2-6 (during and after treatment)

    What you might notice

    • Improved energy levels reflecting enhanced hepatic metabolic function
    • Better tolerance to dietary and environmental challenges
    • Improved liver function parameters if monitored (ALT, AST, GGT)
    • Enhanced recovery capacity after physical or metabolic stress

    What's normal

    • Antioxidant enzyme levels are significantly elevated, providing enhanced hepatoprotection
    • Hepatocyte regenerative capacity is improved
    • Liver immune microenvironment is normalizing
    • These molecular improvements translate gradually into functional hepatic benefits

    What's next

    • Benefits continue developing for weeks after the treatment course ends
    • Plan the next course in 3-6 months (typically 3-4 courses per year)
    • Consider combining with Livagen in subsequent courses for comprehensive liver bioregulation
  3. Month 2-6 (inter-course period)

    What you might notice

    • Sustained improvements in liver function and overall vitality
    • Continued hepatoprotective benefits from persistent epigenetic modifications
    • Gradual return toward baseline as epigenetic effects slowly revert
    • Benefits may diminish over months, indicating readiness for the next course

    What's normal

    • Khavinson protocols are designed as cyclical treatments (3-4 courses per year)
    • Each subsequent course reinforces hepatoprotective gene activation from previous treatments
    • The clinical study showed cumulative benefits over years of periodic treatment
    • Long-term liver health is best supported by consistent cyclical protocols

    What's next

    • Begin the next Ovagen course after 3-6 months
    • Consider rotating with complementary bioregulators between courses
    • Comprehensive programs may use Ovagen alongside Livagen, Epithalon, and other peptides

Signs it's working

Treatment Response

  • Improvement in the primary symptoms or condition being treated
  • Positive changes in relevant lab values or clinical markers
  • Consistent, stable response to Ovagen over time
  • Reduction in symptom frequency or severity

General Well-being

  • Improved energy levels and daily functioning
  • Better quality of life related to the treated condition
  • Manageable or absent side effects indicating good tolerance
  • Positive feedback from healthcare provider during check-ups

Not seeing results? Common reasons

  • Not at therapeutic dose yet—initial doses are for building tolerance, not maximum effect
  • Insufficient time at target dose—most compounds need several weeks to show full benefits
  • Inconsistent dosing schedule—regular, consistent use is crucial for optimal results
  • Individual variation in response—genetics, metabolism, and other factors affect outcomes
  • Underlying conditions or medications interfering with absorption or effectiveness
  • Improper storage leading to degraded product—always verify proper storage conditions

Key research

2020[1]
“The influence of polypeptide liver complex and tetrapeptide KEDA on organism physiological function in norm and age-related pathology”Kuznik BI, Khasanova NB, Ryzhak GA, Mezsheriakova IE, Khavinson VKFinding: Liver polypeptide complex and KEDA tetrapeptide (livagen) restore immune and antioxidant defenses while recovering liver function during hepatitis, especially effective in aging.View study
2001[2]
“Tissue-specific effects of peptides”Khavinson VKFinding: Research (2001) on ovagen contributes important scientific knowledge about its biological and pharmacological properties.View study
2007[3]
“Antioxidant properties of geroprotective peptides of the pineal gland”Kozina LS, Arutjunyan AV, Khavinson VKhFinding: Research (2007) on ovagen contributes important scientific knowledge about its biological and pharmacological properties.View study
2013[4]
“Short cell-penetrating peptides: a model of interactions with gene promoter sites”Khavinson VKh, Tarnovskaya SI, Linkova NSFinding: Research (2013) on ovagen contributes important scientific knowledge about its biological and pharmacological properties.View study
2021[5]
“Peptide Regulation of Gene Expression: A Systematic Review”Khavinson VK, Popovich IG, Linkova NSFinding: Research (2021) on ovagen contributes important scientific knowledge about its biological and pharmacological properties.View study

Questions

Frequently asked

How does Ovagen differ from conventional liver supplements like milk thistle?

While milk thistle (silymarin) works primarily as a direct antioxidant and membrane stabilizer, Ovagen operates at a fundamentally different level — it enters hepatocyte nuclei and binds to DNA promoter sequences to activate gene expression of the liver's own endogenous antioxidant and regenerative systems. This means Ovagen upregulates the liver's capacity to produce its own SOD, glutathione peroxidase, and GST enzymes rather than simply providing external antioxidant molecules. Studies show this gene-level approach exceeds the protective effects of standard antioxidants including melatonin. The two approaches are complementary and can be used together.

What makes Ovagen a geroprotective peptide rather than just a hepatoprotective one?

Ovagen demonstrates a key characteristic of geroprotective agents: significantly greater effects in aged organisms compared to young ones. In animal studies and cell cultures, Ovagen's hepatoprotective effects were more pronounced in aged liver tissue, indicating that it specifically counteracts age-related hepatic decline rather than simply boosting already-healthy liver function. This age-preferential activity, combined with its epigenetic mechanism (DNA binding and gene regulation rather than receptor pharmacology), defines it as a genuine geroprotective hepatoprotective.

Can Ovagen help with existing liver conditions?

Preclinical studies have demonstrated Ovagen's efficacy in experimental hepatitis, liver fibrosis, and cirrhosis models — normalizing liver function, reducing hepatocyte apoptosis, and preventing fibrosis progression. However, these are primarily animal studies, and Ovagen is not approved for treating any specific liver disease in Western countries. Anyone with an existing liver condition should work with their physician and not use Ovagen as a substitute for established medical treatments.

How does Ovagen enhance antioxidant defense beyond melatonin?

Research by Kozina et al. (2007) specifically compared peptide bioregulators with melatonin for antioxidant protection. While melatonin provides direct free radical scavenging, Ovagen (EDL) upregulates gene expression of SOD (superoxide dismutase, which converts superoxide to hydrogen peroxide), glutathione peroxidase (which reduces hydrogen peroxide using glutathione), glutathione-S-transferase (which conjugates glutathione to toxins), and ceruloplasmin (which controls iron-mediated oxidative stress). By activating the genes that produce these enzymes, Ovagen creates a sustained, self-renewing antioxidant defense superior to the transient scavenging of direct antioxidants.

What is the difference between Ovagen (EDL) and Livagen (KEDA)?

Both are Khavinson hepatoprotective peptides but with different primary mechanisms. Livagen (KEDA tetrapeptide) specializes in chromatin decondensation — physically reopening silenced gene regions in aging cells — and potently inhibits enkephalinase enzymes. Ovagen (EDL tripeptide) focuses on upregulating hepatic antioxidant defenses and stimulating hepatocyte regeneration. They target different DNA promoter sequences and activate complementary sets of hepatoprotective genes, making them synergistic when used together in comprehensive liver bioregulation protocols.

Was Ovagen part of the large-scale prevention program?

Yes, liver peptide bioregulators including Ovagen were part of a comprehensive prevention program for over 11,000 industrial workers aged 35-60 years conducted by the Khavinson research group. The program used six oral peptide bioregulators targeting immune, brain, blood vessel, bronchial, liver, and cartilage tissues. Results showed comprehensive health improvements across multiple organ systems, supporting the concept of multi-organ peptide bioregulation for disease prevention.

Further reading

History & related research

History · since 1980

Liver-Derived Peptide Bioregulator for Hepatoprotection and Digestive System Regulation

Ovagen is a synthetic tripeptide (Glu-Asp-Leu, EDL) bioregulator developed by Dr. Vladimir Khavinson at the St.

Read the full history of Ovagen

Ready for the protocol?

Every dosing tier, administration route, timing note, and dose-adjustment rule for Ovagen, on one page.

Medical disclaimer

Ovagen is an investigational research compound not approved by the FDA for human therapeutic use. This information is for educational purposes only and should not be construed as medical advice. Always consult with a qualified healthcare provider before starting any new supplement or treatment protocol.

Last updated: Aug 10, 2026