PE-22-28 vs Thymalin
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
PE-22-28
PE-22-28 is a synthetic peptide fragment derived from research on the SAMP8 mouse model of accelerated aging. It has shown potential for enhancing memory and reducing cognitive decline.
Full details →Thymalin
Thymalin is a polypeptide preparation derived from calf thymus. Developed in Russia, it has been used for decades to support immune function and has shown potential anti-aging effects in long-term studies.
Full details →Side-by-Side Comparison
| Aspect | PE-22-28 | Thymalin |
|---|---|---|
| Dose Range | 500 mcg–2 mg | 5 mg–10 mg |
| Frequency | 1x daily | 1x daily |
| Cycle Length | 1–2 weeks | 1–2 weeks |
| Route | subcutaneous | intramuscular |
| Mechanism | Derived from the protein that is deficient in SAMP8 mice. May work by inhibiting protein phosphatase 2A methylesterase, thereby affecting memory-related signaling pathways. | Regulates the ratio of T-cell subpopulations, stimulates cellular immunity, and enhances phagocytosis. Also affects neuroendocrine regulation and may influence melatonin production. |
| Typical Dosage | Research protocols vary. Intranasal dosing has been studied at various concentrations. Optimal human dosing not established. | Clinical protocols: 5-20mg daily intramuscularly for 3-10 days. Often cycled 1-2 times per year for maintenance. |
| Administration | Intranasal administration preferred for CNS delivery. Research compound with limited human use data. | Intramuscular injection. Usually administered in short courses rather than continuously. Often combined with Epithalamin for anti-aging protocols. |
| Side Effects | Very limited human data. Primarily studied in animal models for safety and efficacy. | Generally well-tolerated. May cause injection site reactions or temporary flu-like symptoms as immune function is modulated. |
| Best For |
What They Have in Common
PE-22-28, Thymalin are both commonly used for:
Key Differences
Unique to PE-22-28:
Unique to Thymalin:
Which Has Stronger Evidence?
- Anti-Aging & Longevity: Thymalin has stronger research support.
| Goal | PE-22-28 | Thymalin |
|---|---|---|
| Anti-Aging & Longevity | low | medium |
Key Studies
Thymalin
- Reparative osteogenesis in mandible in cases of filling a bone defect with hydroxyapatite-containing osteotropic material and injecting the surrounding soft tissues with thymalin: experimental and morphological study.
Wiadomosci lekarskie (Warsaw, Poland : 1960), 2024
- Expression features of T-lymphocytes, B-lymphocytes and macrophages in the post-traumatic regenerate of the mandible rats under conditions of filling a bone defect with hydroxyapatite-containing osteotropic material and thymalin injecting the surrounding soft tissues.
Polski merkuriusz lekarski : organ Polskiego Towarzystwa Lekarskiego, 2024
- The Influence of KE and EW Dipeptides in the Composition of the Thymalin Drug on Gene Expression and Protein Synthesis Involved in the Pathogenesis of COVID-19.
International journal of molecular sciences, 2023
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