The majority of fish oil takers obtain a small percentage of a good daily dose because they just take what is shown on the label. If you are taking a food grade quality fish oil supplements you want to take between 5-10 capsules of fish oil daily to achieve the ideal dosage.

Pharmaceutical grade fish oil supplements such as those from Doctor's Holistic Rx contain a higher amount of omega 3's. You need to take just 2 capsules of pharmaceutical grade fish oil daily to get the ideal dosage of omega 3's.
http://www.amazon.com/Doctors-Holistic-Rx-Pharmaceutical-Distillation/dp/B00KKSELFC
http://www.dailymotion.com/video/x2uq56r