In a Consumer Reports test of fish oil supplements, most passed muster but some didn't measure up on quality.
Lab test results on 15 top brands analyzed for amounts of omega-3 fatty acids, disintegration, spoilage and contaminants. Researchers found that at least one sample from six brands didn't meet all the standards set. The results were released Tuesday and are available on newsstands.
Over-the-counter fish oil supplements are extremely popular and used to treat heart disease, high blood pressure and psoriasis and a number of other ailments.
All the tested supplements had the amount of EPA and DHA omega-3 fatty acids listed on the label, and none went over the limit of lead, dioxins, mercury or PCBs (polychlorinated biphenyl, considered an organic pollutant), according to maximums set by U.S. Pharmacopeia, a nonprofit organization that determines quality and purity standards for medicines, food ingredients, and dietary supplements.