Hawthorne is great for the heart palps and pounding. I over did yesterday and today, I'm dragg'n. I went upstairs to collapse and my heart was pounding pretty hard. I should have gotten up then to take some Hawthorne, but I was so tired, I fell asleep anyway. When I woke up it was still pounding and I took the hawthorne. It really helps. I take what is recommended on the bottle, 3 capsules.