Its the Omega-3 EPA that is the mood stabalizing part of the fish oil. My previous pdoc from california was into alternative treatments for depression (in my case). One has to take over 1200mg/day of the EPA omega 3 for it to be effective however.....
Yes, the omega 3 is wonderful for all the other health aspects of our life from memory to heart & sure many other things also.
I take the liquid fish oil because I heard that we don't get the full use our of the oil from the capsuls having to dissolve.
Any health food store will have the right one.....also want it to be pharmaceutical grade so that the quality is consistent.
Hope you find it was valuable in treatment as I did.