I feel nothing after I drink it.... but other product quite good such as their protein bar and ghee.
I used other Bulletproof products but my first time trying the coffee. The coffee is ok, don't think it tastes that much better than any other coffee. I also haven't noticed it make me feel any better either physically or mentally than any other less expensive but still premium coffee. Don't think its worth the high price.
It has a wonderful rich flavor, and not the burnt flavor some coffees have. Great taste, low acid. I really like the smooth taste one of a kind when you blend it right. Tastes great every time.