The majority of fish oil takers get a small percentage of the recommended dose because they take what is indicated on the label. For a low quality fish oil you should take anywhere from five to ten softgels of fish oil on a daily basis to get the optimal amount.
Pharmaceutical grade fish oil capsules such as those by Doctor's Holistic Rx contain a much higher concentration of omega 3's. You need to take just 2 1000 mg softgels of pharmaceutical grade fish oil on a daily basis to get the optimal amount of omega 3's.
http://www.amazon.com/Doctors-Holistic-Rx-Pharmaceutical-Distillation/dp/B00KKSELFC
http://www.dailymotion.com/video/x2uqgcr
