Thymalin vs Indolicidin
Head-to-head comparison of Thymalin (Calf Thymus Peptide Fraction (Thymalin)) and Indolicidin (Indolicidin (Bovine Neutrophil Antimicrobial Peptide)) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Thymalin | Indolicidin |
|---|---|---|
| Category | Immune Support | Immune Support |
| Full Name | Calf Thymus Peptide Fraction (Thymalin) | Indolicidin (Bovine Neutrophil Antimicrobial Peptide) |
| Molecular Weight | N/A | 2111 Da |
| Half-Life | N/A | Minutes to hours; protease-sensitive |
| Amino Acids | N/A | 13 |
| Typical Dose | 5-20 mg | Research use only; no approved human dose |
| Route | Intramuscular | Topical / Research parenteral |
| Purity | ≥98% | ≥98% |
| Studies Count | 120 | 240 |
| Research Status | Clinical | Pre-clinical |
Thymalin Benefits
- ✓t-cell support
- ✓leukocyte recovery
- ✓immunomodulation
- ✓infection-resilience
Indolicidin Benefits
- ✓broad-spectrum bactericidal activity
- ✓anti-biofilm effects
- ✓membrane disruption
- ✓innate immune support
Thymalin Dosing
5-10 mg IM daily|3-10 day cycles|repeat cycles after 1-4 weeks if studied
Indolicidin Dosing
0.1–10 µM in vitro|1–10 mg/kg in animal models|No established human dose
Thymalin Side Effects
- ⚠injection-site discomfort
- ⚠transient fever
- ⚠rash/allergy
Indolicidin Side Effects
- ⚠cell membrane toxicity at high doses
- ⚠rapid degradation in vivo
- ⚠limited systemic tolerability
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.
Indolicidin
Indolicidin has been extensively studied as a prototype antimicrobial peptide with activity against bacteria, fungi, and some viruses. Research has also explored its use in anti-biofilm strategies and as a template for next-generation synthetic antimicrobial peptides.
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