The doses of omega-3s tested are difficult to achieve through dietary sources alone
Most prenatal supplements do not contain enough omega-3s to reach the required amount to prevent preterm birth.
Currently available omega-3 supplements that contain the doses suggested by the review cost approximately $25 for a 60-day supply (about 40c per day).
Algal oil supplements are an alternative to fish oil supplements for vegetarians.
The quality of fish oil supplements has been raised as an issue for consumers. A 2015 study from the University of Auckland and the University of Newcastle found that only 3 out of 32 fish oil supplements contained EPA and DHA levels equal or higher than labelled. The best-before date, cost and country of origin were not indications of a supplement’s quality.
It is difficult to provide guidance on this other than to advise consumers:
to check the use-by date of supplements
not to consume the supplements if they smell odd
to store supplements in a cool, dark place.