Compound library / Cognitive / Neuroprotective
Peptide fragment derived from CNTF (ciliary neurotrophic factor), explored in animal studies for promoting neuron growth and synaptic density.
| Category | Cognitive / Neuroprotective |
|---|---|
| Typical route | Subcutaneous |
| Half-life | Not well characterized in humans |
| Common dose range | Research-stage only — no established human dosing |
| Typical cycle length | Not established |
BioHack Track models P21 at a half-life of 4 hours, so every dose you log is decayed against that curve and the app shows what is still circulating — not just what you typed.
Reconstitute with bacteriostatic water.
Refrigerate after reconstitution.
Almost entirely rodent/preclinical data; not established for human use.
Track P21 in BioHack Track. Half-life, dose range and route come pre-filled from this library — log a dose and the app counts your vial down, models what is in your system, and puts it on the same chart as your labs and body composition.
These open a search of each database for P21 — they are not citations, and nothing here is evidence for any particular dose. The same links are in the app.
General reference compiled for use inside the app, not medical advice and not a recommendation to take anything. Dose ranges are what is commonly discussed, not a prescription. Talk to a qualified healthcare professional.