I have been taking this cordyceps supplement for about a week now:
http://www.lef.org/Vitamins-Supplements/item01805/Asian-Energy-Boost
I usually bring a 20 oz hot coffee to work in the morning as I settle in. Morning vitamins and supplements, and a bite to eat. This morning I finally noticed… several hours into my morning, I had what felt like a coffee-buzz, with less than half my coffee consumed! Now I have been a caffeine hog for decades and am virtually immune to the stuff…. I haven’t felt a morning rush like this in a loooong time. I think I could do without the coffee now. I could not finish my cup this morning.
EEOS… I think you could easily eliminate the coffee with this stuff!
Another factor… I began taking VINPOCETINE also in the mornings.
http://www.lef.org/Vitamins-Supplements/item01327/Vinpocetine
The Vinpocetine increases blood flow and oxygenation to the brain also, synergistically with what cordyceps does for the rest of the body. This is the strongest wake-me-up I have felt in years.