Comparison
FGL vs P21
Side-by-side attributes from our library comparison data. Read each peptide leaf for dosing math, regulatory status, and citations.
FGL vs. P21
| Attribute | FGL | P21 |
|---|---|---|
| Origin | NCAM FG loop | CNTF-derived (P021) |
| Claimed job | FGFR / neural CAM mimetic | Neurotrophic CNTF fragment |
| Human PK | SKU unpublished | Estimated / research |
Verdict: Two different nootropic research peptides. FGL is not P21 with a new name.