Vasodilators like PDE5 inhibitors and L-Arginine improve nerve bloosflow, and can produce lasting regenerative effect - there have been studies demonstrating im

Vasodilators like PDE5 inhibitors and L-Arginine improve nerve bloosflow, and can produce lasting regenerative effect - there have been studies demonstrating improved endothelial and nerve function in diabetic patients, neurogenic sexual dysfunction, etc. This includes cerebrovascular blood flow, which is a major aspect of Alzheimer's.