I've never tried yerba mate or astragalus but I'm going to place an order today. I have heard the name of the first one but I never realized what it was. I was also just told about a mushroom called Lion's Mane. I didn't try it yet.
I looked it up on wikipedia and looked interesting. It helps with memory and looks like it can even fix dementia and stuff but it didn't really strike as something that would keep me awake and alert.
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