Not really sure if I feel them or not since I don't really know how I feel without them. I was a lifeless zombie with dementia back in December and I am a different person now then I was back then, so I probably feel them. I have some aggression and a decent libido. Vitamins have been huge for me also. Although, the first day I began the herbs (pine pollen) back in January I noticed a change in cognition and my vision improved, my sight used to be shiny and 2 dimensional. Since then there hasn't been any abrupt changes.
The only herb I really really notice is albizia, which I take before social gatherings because it eliminates my social anxiety and makes me extremely talkative, which by nature I'm usually quiet. Odd because most people take it before bed.