Most people taking fish oil supplements obtain a small percentage of a good daily dose because they just take what is recommended on the bottles label. For food grade fish oil you should take anywhere from 5-10 capsules of fish oil daily to obtain the ideal amount.

Pharmaceutical grade fish oil supplements like that from Doctor's Holistic Rx contain a higher amount of the omega 3 fats. You need to take just two 1000 mg softgels of pharmaceutical grade fish oil daily to get the ideal amount of the omega 3 fats.
http://www.amazon.com/Doctors-Holistic-Rx-Pharmaceutical-Distillation/dp/B00KKSELFC
http://www.wat.tv/video/12547985