It's thought to improve neuronal density in the hippocampus and also (higher p) to increase bone density. A lot of bodybuilders and athletes use it for increase

It's thought to improve neuronal density in the hippocampus and also (higher p) to increase bone density. A lot of bodybuilders and athletes use it for increased blood flow benefits, partly because it seems to have fewer side effects then sidenafil (which can cause mild retinal damage leading to a blue tint in the vision; probably why Pfizer used a blue tint in all their advertising). I have no personal experience with it but the theory seems sound. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7321982/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7321982/