>>12826547most likely snake oil, the doses are probably under the effect range, the forms are not bioavailable, etc. If you still think you need a pill rather than a hearty diet, good sleep, and exercise then I'll guide you to someone who knows more about nootropics than I:
https://nootropicsexpert.com/magnesiumMagnesium bisglycinate is the only supplement that I would recommend anyone to take. If you are feeling experimental, look into what the Russian cosmonauts used; Schisandra berry; Rhodiola Rosea; Eleuthero root. I think Gaia Herbs is a good supplier for this
p.s. here are some good videos on sleep:
https://youtu.be/oTlJnyF3REshttps://youtu.be/q9q3hfsPYpMBut don't just trust me, search for the truth yourself, it's better if you're able to answer questions yourself rather than asking someone else.