Nootropics are brain stimulants that offer many benefits, such as wakefulness, alertness, cognition, ADHD/ADD, Alzheimer, chronic fatigue, and improving mental health.
This blog at Health Matter provides a detailed comparison of the popular Nootropics Modalert, Modvigil, Waklert, and Artvigil.
https://www.healthmatter.co/blog/modvigil-vs-modalert-vs-waklert-vs-artvigil/