Awareness around the benefits of krill oil versus fish oil — being just as effective with a lesser amount and the possibility that krill oil may leave more EPA and DHA in the body to be absorbed, according to two clinicals published in 2011 — may be a hot topic in 2012.

A research study conducted earlier this year on two Nordic Naturals arctic cod liver oil products concluded that the effervescent formulation is absorbed more rapidly than gelatin soft gels, and suggested that the effervescent form is equally palatable, making it an acceptable alternative to the soft gel form.

In response to a lawsuit filed Tuesday in California, which claimed that fish oil supplements...