The omega-3 fatty acids contained in the capsules can reduce the risk of heart attacks and strokes.
Consumer reports tested top-selling brands to see if they met quality standards and were free of contaminants.
Walmart's Spring Valley bran offers the best value with the recommended dose costing just seventeen cents per day.
A Consumer Reports medical expert says most people can get sufficient omega-3 fatty acids eating fish like salmon and sardines twice weekly.
Consumers should also check with a doctor before taking fish oil capsules because they can interact with some prescription drugs.
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