That's a good question Doxie. I recently started taking it, my pill provides 600 of the Omega 3, from a 1200 pill. It is supposed to be important to get the distilled kind so you aren't consuming mercury.
But googling the question, I found a web page that indicates you'd be better off staying on your current dose:
http://www.huffingtonpost.com/julie-...b_1886796.html .
It is strange how we find out stuff we think is good for us isn't, and stuff we thought was bad for us isn't, all the time it seems.