blimey I take fish oil daily what is the worry please?
From my understanding some brands of fish oil could be considered dodgy because they contain high mercury levels. This mercury is in the fish because most of the sea in the world is polluted.
These dodgy brands tend to be the cheaper ones you can buy directly off the shelf.
The practitioner only brands which are only available after a consultation with the naturopath are usually more stringently tested.
I use to take a practitioner only brand of low reflux Salmon Oil tablets.
These were (supposedly) mercury free because they came from fast-moving cold water fish from pristine lakes, rather than from the open sea.
Not sure if this was fact or just a marketing ploy but they worked really well.