Thymalin vs HBD-2
Head-to-head comparison of Thymalin (Calf Thymus Peptide Fraction (Thymalin)) and HBD-2 (Human Beta-Defensin 2) — benefits, dosing, side effects, research data, and where to buy.
| Property | Thymalin | HBD-2 |
|---|---|---|
| Category | Immune Support | Immune Support |
| Full Name | Calf Thymus Peptide Fraction (Thymalin) | Human Beta-Defensin 2 |
| Molecular Weight | N/A | 4316 Da |
| Half-Life | N/A | Minutes to hours; protease-sensitive |
| Amino Acids | N/A | 41 |
| Typical Dose | 5-20 mg | Research use only; no approved human dose |
| Route | Intramuscular | Topical / Intranasal / Research parenteral |
| Purity | ≥98% | ≥98% |
| Studies Count | 120 | 420 |
| Research Status | Clinical | Pre-clinical |
Thymalin Benefits
- ✓t-cell support
- ✓leukocyte recovery
- ✓immunomodulation
- ✓infection-resilience
HBD-2 Benefits
- ✓broad-spectrum antimicrobial activity
- ✓epithelial barrier defense
- ✓innate immune modulation
- ✓anti-biofilm potential
Thymalin Dosing
5-10 mg IM daily|3-10 day cycles|repeat cycles after 1-4 weeks if studied
HBD-2 Dosing
0.1–10 µM in vitro|1–5 mg/kg in animal models|No established human dose
Thymalin Side Effects
- ⚠injection-site discomfort
- ⚠transient fever
- ⚠rash/allergy
HBD-2 Side Effects
- ⚠local irritation at high concentrations
- ⚠proteolytic instability
- ⚠potential pro-inflammatory signaling
Research Overview
Thymalin
Thymalin appears in Soviet/Russian clinical literature as a thymus peptide complex used to normalize immune parameters after illness, surgery, or radiation exposure. Reports commonly focus on changes in lymphocyte subsets, phagocytic activity, and infection frequency rather than a single isolated peptide mechanism.
HBD-2
Human beta-defensin 2 has been studied extensively for direct microbicidal effects and for its role in shaping mucosal immunity. Preclinical work shows activity against Gram-negative and Gram-positive organisms, with additional effects on leukocyte recruitment and wound defense.
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