Thymopentin vs Thymalin
Head-to-head comparison of Thymopentin (L-Arginyl-L-Lysyl-L-Aspartyl-L-Valyl-L-Tyrosine) and Thymalin (Calf Thymus Peptide Fraction (Thymalin)) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Thymopentin | Thymalin |
|---|---|---|
| Category | Immune Support | Immune Support |
| Full Name | L-Arginyl-L-Lysyl-L-Aspartyl-L-Valyl-L-Tyrosine | Calf Thymus Peptide Fraction (Thymalin) |
| Molecular Weight | 676.78 Da | N/A |
| Half-Life | 10-30 min | N/A |
| Amino Acids | 5 | N/A |
| Typical Dose | 1 mg | 5-20 mg |
| Route | Subcutaneous | Intramuscular |
| Purity | ≥98% | ≥98% |
| Studies Count | 90 | 120 |
| Research Status | Clinical | Clinical |
Thymopentin Benefits
- ✓t-cell maturation
- ✓helper-suppressor balance
- ✓immune recovery
- ✓antiviral-adjunct research
Thymalin Benefits
- ✓t-cell support
- ✓leukocyte recovery
- ✓immunomodulation
- ✓infection-resilience
Thymopentin Dosing
1 mg SC or IM|2-3x weekly|4-8 week study cycles
Thymalin Dosing
5-10 mg IM daily|3-10 day cycles|repeat cycles after 1-4 weeks if studied
Thymopentin Side Effects
- ⚠injection-site redness
- ⚠mild fever
- ⚠headache
Thymalin Side Effects
- ⚠injection-site discomfort
- ⚠transient fever
- ⚠rash/allergy
Research Overview
Thymopentin
Thymopentin has a long history of preclinical and clinical investigation as a thymic peptide immunomodulator. Published studies report effects on T-cell subsets, cytokine responses, and immune recovery in recurrent infection settings.
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.
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