I give krill oil every other day. I use the NOW brand, 500 mg per capsule. Some raw feeders use it daily, but when I tried to go daily, I was presented with mass diarrhea.
I am thinking about trying the Alnutrin entire supplement with calcium next time, instead of just the egg shell calcium, to eliminate any worry about deficiency.
There are other brands. I know a few people who use Call of the Wild. But it contains some things I don't like, namely menadione, sodium bisulfate. One of the reasons I do feed partial raw is to get away from that ingredient, since the By Nature Organics canned does contain it.
There is another favorite brand in the raw forum I belong to, but I can't think of it right now.