Been on it for 2.5 months now. I like the way it feels. I get a pretty mild flush that brings heat to my whole body. I can see why it would work well with sauna.

The varicose veins on my left leg have almost completely disappeared since taking it. This was huge because that was causing me pain & slowing down my movement. I'm also not sitting in front of my PC all day now, so it's hard to attribute solely to the niacin.

It's the middle of spring here & I'm yet to see signs of hay fever & allergies. This might be too soon to call, but I'm hopeful.