Here are five commonly used nootropic supplements:
Bacopa Monnieri
Rhodiola Rosea
Ginkgo Biloba
Lion's Mane Mushroom
Phosphatidylserine.
It's important to note that while these supplements have been studied and shown to have some potential cognitive benefits, more research is needed to fully understand their effectiveness and safety. Additionally, it's always best to consult with a healthcare professional before starting any new supplement regimen.