# Comparing the biological activity and composition of Cerebrolysin with other peptide preparations

## TL;DR

This study compares Cerebrolysin, a neuropeptide used for neurological disorders, with other similar peptide preparations and finds that they lack comparable biological activity and composition.

## Contribution

The study reveals that other peptide preparations differ significantly in composition and biological activity compared to Cerebrolysin.

## Key findings

- Other peptide preparations lack relevant biological activity compared to Cerebrolysin.
- The peptide composition of these preparations is significantly different from Cerebrolysin.

## Abstract

Neurological disorders, ranging from acute forms such as stroke and traumatic brain injury to neurodegenerative diseases like dementia, are the leading cause of disability-adjusted life years (DALYs) worldwide. A promising approach to address these conditions and promote nervous system regeneration is the use of the neuropeptide preparation Cerebrolysin, which has been shown to be effective in both clinical and preclinical studies. Despite claims of similar clinical efficacy and safety by several peptide preparations, concerns regarding their generic composition and efficacy have been previously raised. Based on these reports, we analyzed the peptide composition and neurotrophic activity of several peptide preparations allegedly similar to Cerebrolysin and approved in some countries for treating neurological diseases. Our results demonstrate that these preparations lack relevant biological activity and that the peptide composition is significantly different from Cerebrolysin. peptide