Indolicidin vs Thymalin
Head-to-head comparison of Indolicidin (Indolicidin (Bovine Neutrophil Antimicrobial Peptide)) and Thymalin (Calf Thymus Peptide Fraction (Thymalin)) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Indolicidin | Thymalin |
|---|---|---|
| Category | Immune Support | Immune Support |
| Full Name | Indolicidin (Bovine Neutrophil Antimicrobial Peptide) | Calf Thymus Peptide Fraction (Thymalin) |
| Molecular Weight | 2111 Da | N/A |
| Half-Life | Minutes to hours; protease-sensitive | N/A |
| Amino Acids | 13 | N/A |
| Typical Dose | Research use only; no approved human dose | 5-20 mg |
| Route | Topical / Research parenteral | Intramuscular |
| Purity | ≥98% | ≥98% |
| Studies Count | 240 | 120 |
| Research Status | Pre-clinical | Clinical |
Indolicidin Benefits
- ✓broad-spectrum bactericidal activity
- ✓anti-biofilm effects
- ✓membrane disruption
- ✓innate immune support
Thymalin Benefits
- ✓t-cell support
- ✓leukocyte recovery
- ✓immunomodulation
- ✓infection-resilience
Indolicidin Dosing
0.1–10 µM in vitro|1–10 mg/kg in animal models|No established human dose
Thymalin Dosing
5-10 mg IM daily|3-10 day cycles|repeat cycles after 1-4 weeks if studied
Indolicidin Side Effects
- ⚠cell membrane toxicity at high doses
- ⚠rapid degradation in vivo
- ⚠limited systemic tolerability
Thymalin Side Effects
- ⚠injection-site discomfort
- ⚠transient fever
- ⚠rash/allergy
Research Overview
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.
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.
Ready to buy?
Find both peptides from our verified, lab-tested vendors with purity certificates and third-party testing.