Most people taking fish oil supplements are getting only a fraction of an optimal dose because they do what is shown on the label of the bottle. With a food grade quality fish oil you want to take anywhere from five to ten softgels of fish oil daily to get the most healthy dosage.
Pharmaceutical grade fish oil capsules like that by Doctor's Holistic Rx contain a higher amount of omega 3's. You only have to take two 1000 mg capsules of pharmaceutical grade fish oil daily to get the most healthy dosage of omega 3's.
http://www.amazon.com/Doctors-Holistic-Rx-Pharmaceutical-Distillation/dp/B00KKSELFC
http://www.wat.tv/video/12545015