What about niacin and liver damage?
The things you read about niacin causing liver damage is from fake niacin. This is either niacinamide or nicotinamide. This is not true for nicotinic acid, which is flush niacin.
Niacin is good for the liver. Make sure that you get pure nicotinic acid aka "flush niacin". Better yet, get it in combination with an amino acid and another vitamin as the combination capsule GPR109A via GPR109A.com. This page has a link to the actual supplier, PureBulk.