P21: The Complete Guide to the Neurogenesis Amplifier

P21: The Complete Guide to the Neurogenesis Amplifier

The Peptide Index
Published on: 26/01/2026

Complete guide to P21, the CNTF mimetic peptide that amplifies endogenous neurogenesis by neutralizing blocking antibodies. Covers mechanisms, the BDNF/TrkB pathway, Alzheimer's research, dosing protocols, and realistic expectations for cognitive enhancement.

Cognitive Peptides
Dihexa: The Complete Guide to the Synapse Builder

Dihexa: The Complete Guide to the Synapse Builder

The Peptide Index
Published on: 25/01/2026

Complete guide to Dihexa, the potent HGF/c-Met activator that stimulates synaptogenesis and neurogenesis. Covers mechanisms, dosing protocols, safety considerations including cancer risk discussion, and realistic expectations for cognitive enhancement.

Cognitive Peptides
Semax: Complete Guide to the Cognitive Enhancement Peptide

Semax: Complete Guide to the Cognitive Enhancement Peptide

The Peptide Index
Published on: 09/01/2026

A synthetic neuropeptide that enhances cognitive function by upregulating BDNF and modulating neurotransmitters. This guide covers the science, protocols, timeline expectations, and stacking strategies for cognitive optimization research.

Cognitive Peptides