The Claim
A fish oil supplement labeled as containing 709 mg of EPA per serving was found to contain 206 mg per serving, representing a 71% under-delivery, while another labeled as containing 500 mg of DHA was found to contain 752 mg per serving, representing a 50% over-delivery.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Laboratory testing of two fish oil supplements revealed that one contained significantly less EPA than stated on the label, while another contained more DHA than claimed.
See the scientific wording
One fish oil supplement labeled as containing 709 mg of EPA per serving was found to contain only 206 mg per serving, representing a 71% under-delivery of the claimed dose, while another labeled for 500 mg of DHA was found to contain 752 mg, representing a 50% over-delivery.
What the research says
1 studyStudy: The Quantitation of EPA and DHA in Fish Oil Dietary Supplements Sold in the United States
Scientists tested fish oil pills bought from stores and found that many didn’t have the amount of healthy fats they claimed on the label—some had way less, some had way more. So the claim that these supplements often lie about their ingredients is true.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.