The majority of fish oil takers are getting a small percentage of a good daily dose because they do what is indicated on the label of the bottle. With a low quality fish oil capsules you need to take between five to ten capsules of fish oil daily to achieve the optimal dosage. br br Pharmaceutical grade fish oil products such as those from Doctor's Holistic Rx contain a much higher concentration of omega 3 fatty acids. You need to take just two softgels of pharmaceutical grade fish oil daily to get the optimal dosage of omega 3 fatty acids.