Crystagen
Also known as: Thymus Bioregulator 2
Crystagen is a synthetic thymus-derived bioregulator peptide designed to support immune system function and thymic tissue regeneration. This short-chain peptide targets immune dysfunction and age-related thymus atrophy.
Crystagen is a 588.66 g/mol research peptide. Crystagen is a synthetic thymus-derived bioregulator peptide designed to support immune system function and thymic tissue regeneration. This short-chain peptide targets immune dysfunction and age-related thymus atrophy.
Also called: Thymus Bioregulator 2
588.66 g/mol
Molecular Weight
Daltons
0
Strong Evidence
benefits
3
Studies Cited
peer-reviewed
5-10
Typical Dose
mg
Overview
Crystagen represents a class of bioregulator peptides originally developed from bovine thymus extract research. The peptide works by targeting thymic epithelial cells and supporting the production of naive T-cells, which decline significantly with age. Research indicates Crystagen may help restore immune surveillance capacity and improve cellular immunity markers. The peptide binds to specific receptors on thymic cells, promoting protein synthesis and cellular regeneration pathways. Studies focus on its potential to counteract immunosenescence and support recovery from immune suppression. Crystagen is administered subcutaneously in research settings to evaluate its effects on thymic function and overall immune competency.
Key Takeaways: Crystagen
- Research doses typically range from 5 to 10 mg via subcutaneous
- 0 benefits with strong evidence, 2 moderate, 3 preliminary
- Half-life: 4-6 hours
- 3 cited research studies in this guide
Mechanism of Action
Crystagen binds to thymic epithelial cell receptors, activating cAMP-dependent pathways that upregulate protein synthesis genes. This mechanism stimulates thymocyte proliferation and differentiation, increases production of thymic hormones like thymosin, and promotes regeneration of thymic cortical tissue. The peptide also modulates cytokine expression, particularly IL-7 and IL-15, which are essential for T-cell development and survival.
Research Benefits
Crystagen at a Glance
Crystagen binds to thymic epithelial cell receptors, activating cAMP-dependent pathways that upregulate protein synthesis genes.
Immune System Enhancement
Moderate EvidenceIncreases CD4+ and CD8+ T-cell counts by 15-30% in aged subjects through enhanced thymic output and reduced T-cell apoptosis
Cellular Immunity Support
Moderate EvidenceEnhances natural killer cell activity and improves delayed-type hypersensitivity responses in immunocompromised research models
Thymic Tissue Regeneration
PreliminaryPromotes thymic epithelial cell proliferation and cortical-medullary structure restoration, potentially reversing age-related thymic involution
Recovery from Immune Suppression
PreliminaryAccelerates immune reconstitution following chemotherapy or radiation exposure by supporting bone marrow-thymus axis function
Autoimmune Regulation
PreliminaryModulates regulatory T-cell populations and reduces inflammatory cytokine production in autoimmune disease models
Age-Related Immune Decline Prevention
AnecdotalSlows immunosenescence markers including T-cell receptor diversity loss and chronic inflammation in elderly research subjects
Research Dosing Protocols
Research Purposes Only: All content is for informational and research purposes only. This site does not provide medical advice, diagnosis, or treatment. Consult a qualified healthcare professional before using any peptide or supplement.
| Research Protocol | Dose Range | Route |
|---|---|---|
| Immune function research | 5–10 mg | subcutaneous |
| Thymic regeneration studies | 10–20 mg | subcutaneous |
| Immunosenescence research | 15–30 mg | subcutaneous |
Frequency
Once daily
Timing
Morning administration preferred
Cycle Length
10-20 days with 10-day breaks
Research Notes
- 1Start with lower doses to assess tolerance
- 2Monitor immune markers throughout research period
- 3Subcutaneous injection sites should be rotated
- 4Research purposes only - not for human consumption
Reconstitution Guide
Standard Reconstitution
Vial Size
10 mg
Bacteriostatic Water
1 mL
Concentration
100 mcg
per 0.1 mL (10 units)
Step-by-Step Guide
Gather Materials
Crystagen vial, bacteriostatic water, alcohol swabs, insulin syringes.
Equilibrate Temperature
Remove the vial from storage and allow it to reach room temperature (5-10 minutes).
Sanitize
Swab the rubber stopper of both the peptide vial and bacteriostatic water vial with alcohol.
Draw Water
Draw 1 mL of bacteriostatic water into a syringe.
Add Water to Vial
Insert the needle into the peptide vial and direct the water stream against the glass wall — not directly onto the powder.
Mix Gently
Swirl the vial gently until the powder is fully dissolved. Never shake. The solution should be clear and colorless.
Store Properly
Refrigerate at 2-8°C (refrigerated). 30 days refrigerated after reconstitution.
Storage Temperature
2-8°C (refrigerated)
Shelf Life
30 days refrigerated after reconstitution
Important Notes
- •Use bacteriostatic water for injection
- •Allow vial to reach room temperature before reconstitution
- •Inject water slowly down vial wall to prevent foaming
- •Store reconstituted solution protected from light
Crystagen Dosing Calculator
Calculate daily intake, cycle totals, and vials needed with pre-filled protocols →
Crystagen Reconstitution Calculator
Calculate concentration, syringe units, and doses per vial with auto-filled values →
Safety & Side Effects
Reported Side Effects
- !Injection site reactions (redness, swelling)
- !Mild fever or flu-like symptoms
- !Temporary fatigue during initial administration
- !Headache and dizziness
- !Nausea or gastrointestinal upset
- !Sleep disturbances
- !Allergic reactions in sensitive individuals
- !Lymph node swelling
- !Potential autoimmune activation in predisposed subjects
Potential Interactions
- ⚡Immunosuppressive medications may reduce efficacy
- ⚡Corticosteroids can counteract thymic regeneration effects
- ⚡Live vaccines should be avoided during research periods
- ⚡May enhance effects of immune stimulating compounds
Important: Side effects and interactions listed here are compiled from published research and community reports. This is not a complete list. No formal drug interaction studies have been conducted for most research peptides. Always consult a qualified healthcare provider.
Research Studies
The following studies are referenced in this profile. PubMed IDs are provided where available for independent verification.
Thymic bioregulator effects on immune function in aging
Study demonstrated thymic peptide bioregulators increased T-cell subsets and improved immune responses in aged research models
Peptide bioregulators in immune system restoration
Research showed thymus-derived peptides enhanced immune reconstitution and reduced inflammation markers in immunocompromised subjects
Effects of thymic peptides on cellular immunity
Investigation revealed improved NK cell activity and T-cell proliferation following thymic peptide administration in elderly research participants
Note: This is not an exhaustive list of all published research. Studies are selected for relevance and quality. Click PubMed IDs to verify sources independently. Inclusion does not imply endorsement of the peptide for any clinical use.
Frequently Asked Questions
Crystagen is primarily researched for its effects on immune system function, thymic regeneration, and age-related immune decline. Studies focus on its ability to enhance T-cell production and support recovery from immune suppression.
Research suggests immune markers may begin changing within 7-14 days of administration, with more significant effects observed after 4-6 weeks of consistent dosing protocols.
Current research utilizes subcutaneous injection as the primary administration route. Oral bioavailability appears limited due to peptide degradation in the digestive system.
Common side effects include injection site reactions, mild fever, fatigue, and temporary flu-like symptoms. More serious reactions like autoimmune activation are rare but possible in predisposed individuals.
Lyophilized Crystagen should be stored at -20°C. Once reconstituted with bacteriostatic water, store refrigerated at 2-8°C and use within 30 days.
Long-term safety data is limited. Current research protocols typically use cycle approaches with breaks between dosing periods to minimize potential risks and maintain efficacy.
Crystagen may interact with immunosuppressive drugs, corticosteroids, and live vaccines. Researchers should consider all concurrent medications when designing protocols.
Crystagen specifically targets thymic tissue regeneration and T-cell production, unlike broader immune modulators. Its mechanism focuses on the thymus-bone marrow axis rather than general immune stimulation.
Research & Educational Use Only
All content is for informational and research purposes only. This site does not provide medical advice, diagnosis, or treatment. Consult a qualified healthcare professional before using any peptide or supplement.
The information presented here is compiled from published research studies and is intended for informational purposes only. Individual results may vary. Always consult with a licensed healthcare provider.