Ships from British Columbia, Canada|Canadian Orders Ship Domestically, No Border Crossing|International Shipping Available|Lab Verified|≥98% Purity Guarantee|Shipped Within 24hr|Batch-Specific COAs|Ships from British Columbia, Canada|Canadian Orders Ship Domestically, No Border Crossing|International Shipping Available|Lab Verified|≥98% Purity Guarantee|Shipped Within 24hr|Batch-Specific COAs|Ships from British Columbia, Canada|Canadian Orders Ship Domestically, No Border Crossing|International Shipping Available|Lab Verified|≥98% Purity Guarantee|Shipped Within 24hr|Batch-Specific COAs|Ships from British Columbia, Canada|Canadian Orders Ship Domestically, No Border Crossing|International Shipping Available|Lab Verified|≥98% Purity Guarantee|Shipped Within 24hr|Batch-Specific COAs|
All Comparisons

Thymosin Alpha-1 vs Thymalin

Research material comparison: purity standards, available formats, molecular data, batch COA documentation, and regulatory status. For in vitro research use only.

Thymosin Alpha-1: CThymalin: C
AttributeThymosin Alpha-1Thymalin
CategoryImmune ModulatorImmune / Anti-Aging
Evidence RatingCPhase I–II Clinical TrialsCEarly Human or Mixed Evidence
Clinical StatusApproved in 35+ countries (Zadaxin); FDA orphan drug designation; not FDA-approved in the USApproved medication in Russia for immunodeficiency. Used clinically since 1982. Western clinical evidence is limited.
MechanismTa1 (C129H215N33O55) activates Toll-like Receptors TLR2 and TLR9 on immune cells, triggering the MyD88 and NF-kB signaling pathways to put the immune system on alert without destructive inflammation. Key mechanism: increases MHC Class I expression, unmasking hidden viruses and cancer cells for immun...Thymalin contains short bioregulatory peptides (primarily di- and tripeptides including Glu-Trp) derived from thymic tissue. These peptides are proposed to interact with DNA regulatory sequences, modulating gene expression related to immune function. Specifically, thymalin is thought to promote thym...
Half-Life~2 hours~30-60 minutes (short peptide complex)
Bioavailability~100% IM/SC
Molecular Weight~3108.3 g/mol
WADA StatusProhibitedNot Listed
Research Half-Life~2 hours~30-60 minutes (short peptide complex)
Key Use Cases
  • Immune Support
  • Immune Support
  • Anti-Aging & Longevity
Safety Concerns
  • One of the safest immune therapies available; well-tolerated even at doses 100x higher than therapeutic standard
  • Most common complaint: temporary redness or stinging at injection site (10-15% of users), similar to a mosquito bite, lasting 30-60 seconds
  • Mild "immune flu" possible: low-grade fatigue, body aches from cytokine circulation (sign of immune activation, not infection)
  • Well-tolerated in Russian clinical practice over 40+ years
  • Rare: mild injection site reactions, transient low-grade fever
  • No serious adverse events reported in published literature
Contraindications
  • Organ transplant recipients (ABSOLUTE contraindication -- immune boosting can trigger fatal organ rejection)
  • Patients on immunosuppressive therapy post-transplant
  • Hypersensitivity to thymosin alpha-1
  • Pregnancy and breastfeeding (insufficient data)
  • Autoimmune diseases (immune stimulation may worsen)
  • Organ transplant recipients (risk of rejection)
  • Known allergy to bovine-derived products
Regulatory (US)Not FDA-approved. FDA orphan drug designation for hepatitis B. Available through compounding pharmacies.Not FDA-approved. Available as research peptide.

Research Material Specifications

Catalog specifications for the corresponding research materials, including batch documentation coverage.

SpecificationThymosin Alpha-1Thymalin
Purity Standard≥98%≥98%
CAS Number62304-98-7N/A
Molecular FormulaN/AN/A
Available Formats10mg10mg
Batch COAs Published
Stock StatusOut of stockOut of stock

Research Disclaimer: This comparison is provided for educational purposes only. All products are sold exclusively for in vitro research use. The information presented is based on published preclinical and clinical research and does not constitute medical advice. Consult a qualified healthcare professional before making any decisions regarding peptide use.

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