The Bad Lawyer knows less than nothing about chemistry, but I think it might be a bad thing to ingest the compound polychlorinated biphenyl, or PCB.
According to a lawsuit reported on at the San Francisco Chronicle an environmental group, Mateel Environmental Justice Group has filed a massive lawuit against the makers and sellers of Fish Oil supplements because those supplements contain that PCB stuff which they say is carcinogenic. You can get these supplements at yoru local CVS, RiteAid and GNC.
Oh, the products named in the lawsuit are:
-- GNC Liquid Norwegian Cod Liver Oil
-- Nature Made Cod Liver Oil
-- Nature Made Odorless Fish Oil
-- Now Foods Double Strength Cod Liver Oil
-- Now Foods Salmon Oil
-- Now Foods Shark Liver Oil
-- Solgar 100 percent pure Norwegian Shark Liver Oil Complex
-- Solgar Norwegian Cod Liver Oil
-- Twinlab Emulsified Norwegian Cod Liver Oil
-- Twinlab Norwegian Cod Liver Oil