Hi Sharp,
Medved is correct a test will determine what dosage you need
It also depends on what you wish to accomplish, but most studies you will read show that DHA supplementation is much more of a benefit that EPA
I needed a higher dosage of DHA, so I went with the single pill Solgar 950 Omega - 3, then I chase that with one Carlson DHA Gems
so my 2 pill a day provides
EPA = 642mg
DHA = 908mg
Two of the Nordic 1000's provide
EPA = 650mg
DHA = 450mg
Really want a blast of Omega-3, pick up a few cans of this Wild Planet Tuna,
EPA= 720mg
DHA = 2320mg, WOW
Thats just one 5 oz can, most health food stores and some supermarkets carry this brand now. Best yet, no chance of fish breath that sometimes arises from pill form
www.wildplanetfoods.com/store/products/wild-albacore-tuna.html