Featured Nutrition Dr. Mercola Herring Caviar Oil, 90 Servings (180 Capsules), non GMO, Gluten Free, Soy Free, Certified Sustainable Seafood… Our Herring Caviar Oil is an excellent omega-3 option for those who may be allergic to shellfish or would like an alternate or additional source to Krill or other fish oils. Being similar to krill, herring is also an...