The omega-3s in TheraTears Nutrition come from organically grown cold-pressed lignan-free flaxseed oil, and premium molecularly-distilled (mercury-free, PCB-free) fish oil. This flaxseed/fish oil blend supplements omega-3 metabolism better than flaxseed or fish oil alone, and makes TheraTears Nutrition great for healthy tears and eyes, and great for healthy saliva and oral health. "Our landmark research shows that omega-3 nutrition is critical for normal tear function that is necessary to maintain healthy, comfortable eyes throughout the day. And new research also shows that TheraTears Nutrition also supports saliva production that is necessary for oral health and mouth comfort. Try TheraTears Nutrition and see what we have accomplished!" Jeffrey P. Gilbrand, MD.