Niacin has its own side effects, so it should be monitored with blood tests like other cholesterol drugs.
By the way, I bought a great fish oil to, with the highest DHA ratio, all tested for heavy metals, loving it ...
http://www.xtend-life.com/product/Omega_3_DHA_Fish_Oil.aspx
View the label, also, Magnesium will reduce plaque buildup along with L-Arginine, but don’t take L-Arginine if you have had a heart attack or stroke ...