Neuropeptides: research peptides

Semax is more oriented towards cognitive and neuroprotective functions, while Selank (derived from tuftsin) is more studied for its anxiolytic and immunomodulatory properties. They have distinct mechanisms of action.

Yes, Semax and Selank are designed to cross the blood-brain barrier. Intranasal administration is often used in research to optimize brain bioavailability.

In research, intranasal administration is common provides more direct access to the brain. Peptides are reconstituted and then administered via calibrated nasal spray.