Lactoferricin vs Thymulin
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
Lactoferricin
Lactoferricin is an antimicrobial peptide derived from lactoferrin, a protein found in milk and other secretions. It has potent antibacterial, antiviral, and antifungal properties.
Full details →Thymulin
Thymulin (Facteur Thymique Sérique) is a zinc-dependent nonapeptide hormone produced by thymic epithelial cells. It plays important roles in T-cell differentiation and immune system maturation.
Full details →Side-by-Side Comparison
| Aspect | Lactoferricin | Thymulin |
|---|---|---|
| Dose Range | 100 mcg–500 mcg | 100 mcg–400 mcg |
| Frequency | 1x daily | 1x daily |
| Cycle Length | 2–4 weeks | 4–8 weeks |
| Route | subcutaneous | subcutaneous |
| Mechanism | Binds to and disrupts microbial membranes through electrostatic interactions. Also binds to lipopolysaccharide (LPS) to neutralize endotoxins and has immunomodulatory effects. | Requires zinc for biological activity. Promotes T-cell differentiation, modulates cytokine production, and influences neuroendocrine function. Levels decline significantly with age. |
| Typical Dosage | Research applications vary widely. Oral lactoferrin supplements (containing lactoferricin precursor) typically dosed at 100-400mg daily. | Research protocols vary. Often studied alongside zinc supplementation. Typical research doses in the microgram range. |
| Administration | Available through lactoferrin supplementation orally. Purified lactoferricin primarily used in research settings. | Subcutaneous or intramuscular injection in research settings. Requires adequate zinc status for activity. |
| Side Effects | Lactoferrin supplementation is generally well-tolerated. May cause GI upset in some individuals. Derived from milk so caution with dairy allergies. | Limited data on exogenous administration. Theoretical effects on immune function require monitoring. |
| Best For |
What They Have in Common
Lactoferricin, Thymulin are both commonly used for:
Key Differences
Unique to Lactoferricin:
Unique to Thymulin:
Which Has Stronger Evidence?
- Immune Support: Lactoferricin has stronger research support.
| Goal | Lactoferricin | Thymulin |
|---|---|---|
| Immune Support | high | medium |
Key Studies
Lactoferricin
- Lactoferricin enables adenovirus infection of human skeletal muscle cells.
Npj viruses, 2025
- Lactoferricin, an antimicrobial motif derived from lactoferrin with food preservation potential.
Critical reviews in food science and nutrition, 2024
- Expression and antimicrobial activity of the recombinant bovine lactoferricin in Pichia pastoris.
Synthetic and systems biotechnology, 2024
Thymulin
- Thymulin restrains age-associated myeloid inflammation and enhances cancer immunotherapy.
Nature communications, 2026
- Thymulin and peroxiredoxin 6 have protective effects against streptozotocin-induced type 1 diabetes in mice.
International journal of immunopathology and pharmacology, 2021
- Nanoparticle-based thymulin gene therapy therapeutically reverses key pathology of experimental allergic asthma.
Science advances, 2020
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