Tetradehydrothalictrifoline is a nature product.

This peptide is a potent humanin (HN) derivative. It completely suppresses neuronal cell death by Alzheimer's disease-relevant insults.

Hyaluronic acid (HA) is an anionic nonsulfated glycosaminoglycan distributed widely throughout connective epithelial and neural tissues. It is unique among glycosaminoglycans in that it is nonsulfated forms in the plasma membrane instead of the Golgi and can be very large with its molecular weight often reaching the millions.