Abstract
A study of a national sample of n‐3 fatty acid dietary supplement products included multiple lots of 83 fish oil, flax oil and fish/plant oil blends purchased from retail and direct channels. Products were analyzed for six n‐3 fatty acids using validated methods and certified reference materials, and data were compared to label information. Preliminary results show mean % differences from label within 10% of label claims for the major n‐3 fatty acids: alpha‐linolenic acid (ALA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). The minor n‐3 fatty acids, docosapentaenoic acid (DPA) and stearodonic acid (SDA) each add about 7–8% to the EPA+DHA totals for fish oil products. Some lab methods have additional fatty acids included in the total. Product labels listed a total n‐3 fatty acid amount 65% (n=54) of the time, with a variety of calculations indicated. The optimum number of n‐3 fatty acids to include in the DSID totals for comparison to labels is being investigated. National estimates for n‐3 fatty acids will be included in the next release of the DSID, which currently reports estimates of ingredients in multivitamin dietary supplements (http://dsid.usda.nih.gov). Funding: ARS/USDA & ODS/NIH Y1CN501006
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
