I post this whenever I find these things:

Don't.

Absolutely NONE of these is targeted/produced to turn a smooth brain into a phd pundit, NONE are even fully understood from a pharmacological perspective regarding side effects, prolonged use and interactions with other diet / complements / meds.

If any healthcare professional seriously recommend these to "boost neurogenesis" ask for peer reviewed studies regarding any and all "novel" substances, because there's a chance these ain't even FDA approved to begin with.