Dr. Barry Sears Dr. Sears Comments:

Here is the dark side of increased omega-3 concentrates. They are more prone to oxidation since natural anti-oxidants are being removed in the concentration process, and most of the replacement anti-oxidants are not strong enough to prevent accelerated oxidation in the capsule.  What you want is an oil that has a very Active Oxygen Method (AOM) stability.  Most fish oils don’t.