Alpha-Defensin vs FGL
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
Alpha-Defensin
Alpha-defensins are small cationic peptides that are key components of the innate immune system. They have broad-spectrum antimicrobial activity against bacteria, fungi, and some viruses.
Full details →FGL
FGL (FG Loop) is a synthetic peptide that mimics the neural cell adhesion molecule (NCAM) FG loop region. It promotes neuroplasticity and has shown cognitive-enhancing effects in research.
Full details →Side-by-Side Comparison
| Aspect | Alpha-Defensin | FGL |
|---|---|---|
| Mechanism | Insert into microbial membranes to form pores, leading to cell death. Also have immunomodulatory effects including chemotaxis of immune cells and cytokine modulation. | Binds to FGFR1 (fibroblast growth factor receptor 1) to activate downstream signaling cascades that promote neurite outgrowth, synaptic plasticity, and neuronal survival. |
| Typical Dosage | Research compound - dosing varies by application. Typically studied in laboratory and early clinical research settings rather than for general use. | Research protocols have used subcutaneous doses ranging from 1-10mg. Intranasal administration also studied. Optimal dosing not established. |
| Administration | Various routes studied including topical, local injection, and systemic administration depending on application. | Subcutaneous injection or intranasal administration. Research compound with limited human dosing data. |
| Side Effects | Limited human use data. May cause local inflammation. Potential for immune activation effects. | Limited human data available. Animal studies show good tolerability. |
| Best For |
Key Differences
Unique to Alpha-Defensin:
Unique to FGL:
Detailed Analysis
Commonalities
Alpha-Defensin and FGL are used for different purposes and have limited overlap in their applications.
Which Should You Choose?
Choose Alpha-Defensin for Recovery & Healing, Immune Support. Choose FGL for Cognitive Performance.