DiHEXA is a peptide that is derived from angiotensin IV that is utilized for many applications. It is primarily known as a potential therapeutic application for Alzheimer's and Parkinson’s disease. DiHEXA provides protection to nerve cells (even possibly reversing neurological damage); it also stimulates the formation of new neuronal connections and the formation of new neurons from stem cells. DiHEXA increases cerebral blood flow and activates hepatocyte growth factor (HGF) which can improve memory acquisition, memory consolidation, and neural differentiation. Typically DiHEXA is dosed twice a day and may be used at the same time as semax/selank and/or cerebrolysin.