– Insulin-like Growth Factor I (24-41) TFA, a fragment comprising amino acids 24 to 41 of the full IGF-I TFA molecule, is a variant of IGF-I TFA, which itself is a 70 amino acid polypeptide hormone. This hormone serves as a trophic factor beneficial for both neurons and glial cells, playing a significant role in mediating the effects of growth hormone (GH) on systemic growth. Additionally, IGF-I TFA exhibits anabolic, antioxidant, anti-inflammatory, and cytoprotective properties. The specific fragment IGF-I (24-41) TFA is involved in regulating somatic growth as well as behavioral development [1] [2] [3].