"i am amazed with the mental effects of niacin. ok, i started taking it 5 weeks ago to lower my high cholesterol and tryclicerides off the chart!!! i have been having energy like i had 20 years ago, positive attitude, motivated and i have been on every tca and ssri and snri and none worked. i feel 25 years younger. my fibro and arthritis is less noticeable, and after a heart attack 3 years ago and 3 stents put in, from december till june, i was having heart palpitations every day that concerned me. after a few days of 1gram of niacin, for 3 weeks, not one heart palpitation whatsoever... this stuff is great!!!!"