Most people taking fish oil supplements are getting just a fraction of a good daily dose because they just take what is indicated on the label. For a low quality fish oil you should take anywhere from 5-10 softgels of fish oil every day to get the best dose.

Pharmaceutical grade fish oil supplements like that by Doctor's Holistic Rx contain a higher amount of omega 3 fatty acids. You need to take just 2 1000 mg capsules of pharmaceutical grade fish oil every day to get the best dose of omega 3 fatty acids.
http://www.amazon.com/Doctors-Holistic-Rx-Pharmaceutical-Distillation/dp/B00KKSELFC
http://www.wat.tv/video/12546541