Intranasal administration
Delivery of a peptide through the nasal mucosa, bypassing the blood-brain barrier for some compounds. Used for peptides like Selank and Semax that target the central nervous system.
Frequently Asked Questions
What is Intranasal administration?
Why is Intranasal administration important in peptide research?
Related Terms
A semi-permeable membrane of endothelial cells that separates circulating blood from brain tissue. Most peptides cannot cross the BBB, which is why intranasal delivery is used for neuroactive peptides like Selank and Semax.
BioavailabilityThe fraction of an administered dose that reaches systemic circulation unchanged. Subcutaneous injection provides 65–95% bioavailability for most peptides; oral bioavailability is typically below 1% without absorption enhancers.
Related Peptide Profiles
A synthetic heptapeptide analog of tuftsin with anxiolytic and nootropic properties. Modulates serotonin, dopamine, and BDNF without sedation.
SemaxA synthetic heptapeptide derived from ACTH(4-10) with neuroprotective and cognitive-enhancing properties. Approved in Russia for stroke and cognitive disorders.