selenium is part of the glutathione peroxidase enzyme system and Selenoproteins: Mechanisms, Health Functions, and Emerging Applications Selenium – Human Nutrition [DEPRECATED]

Potential CNS Access : Some research suggests nasal administration may facilitate direct transport to the central nervous system via olfactory and trigeminal nerve pathways, though this remains an area of ongoing investigation [5]

Used for agents such as leuprolide, goserelin, or other hormonal antineoplastics

Published in Pharmaceuticals (PMID: 38675421), this 41-page open-access review proposes that BPC-157, while not meeting classical neurotransmitter criteria, functions as a cytoprotection mediator with neurotransmitter-like activity through a network of interconnected evidence. What Makes BPC-157 Unique BPC-157 is a 15-amino acid peptide (sequence: GEPPPGKPADDAGLV, molecular weight 1419) native and stable in human gastric juice for over 24 hours, showing no sequence homology with known gut peptides

[DOI] [PubMed] [Google Scholar] 94.Cao J., Duan S., Zhang H., Chen Y., Guo M