Omega-3 oils go rancid very quickly. That's why fish stink so much when they
go bad. I would be dubious of buying a packaged product containing omega-3 oil.
What I do is buy whole flax seed from Wild Oats, and then just before I
use it, I put it in a coffee grinder. The flax seed hull protects the omega-3
from the air, but it is too tough to digest. So by grinding the seed just
before using it, it insures the omega-3 oil is as fresh as possible while
still being able to digest it. Another good thing to take is vitamin E.
It is an anti-oxident and it helps clean up free radicals caused by
rancid oils. Olive oil is also very good for you and I use it almost
exclusively in my cooking.