Description
P21 peptide in a nasal spray. It is a synthetic analog of ciliary neurotrophic factor (CNTF), designed to mimic its neurotrophic effects. Engineered through epitope mapping, P21 is composed of specific amino acid sequences that enhance its stability and ability to cross the blood-brain barrier.



Samuel Green –
Effective P21 Spray with remarkable neurotrophic effects. Enhanced stability and brain barrier penetration.
SapphireRain_77 –
This P21 Spray is top-notch quality! Enhanced stability and brain barrier crossing. Five stars!
Alex Johnson –
I sprayed the P21 on my car and wow, it shines like a new penny! So easy to use, just spray and wipe. Great value for the price. Definitely recommend!