http://www.earthclinic.com/Supplements/niacin.rss http://www.earthclinic.com/template_img/logo.jpg http://www.earthclinic.com/Supplements/niacin.rss Niacin (B3) and Niacinamide cures on Earth Clinic. Sat, 25 May 13 08:23:53 -0500 en-us http://www.earthclinic.com/Redirect.php?pageLink=/Supplements/niacin.html&name=CONTRAINDICATIONS_85269 /Supplements/niacin.rss1 Mon, 10 Sep 12 23:15:10 -0500 Danny from Uxbridge, England writes: "Bill from the Phillipines, . Are you sure taking vitamin B-3 at 500 mgs is OK... I took one pill (niacinamide)and currently feel sick to my stomach... I also have hepatitis -C... Maybe is contraindicated for B-3? "