Can you buy it in grocery stores? If not, what is an equivalent product that can be purchased in stores - and how much per serving, and how frequently should you take it?
Impossible. I'm in Denmark for the next 4 months. GNC type stores are few and far between, and I have not found flax seed oil at the few places that do carry other supplements. I asking specifically is there anything at the grocery store that can replace flax seed oil as a good source of essential fats?
A source of good fatty acids would be Extra Virgin Olive Oil, you can also eat peanuts, almonds, etc. As far as Omega3's i'd go for the Flax, you can buy it here on this website or you can also check at www.dpsnutrition.com