Always take fish oil capsules with meals. To reduce burping, store the capsules in the refrigerator or freezer and swallow them cold.
The following side effects may occur while you take fish oil capsules. Most of these side effects are mild and will decrease overtime. They are rare in patients who take low doses of fish oils.
Cod liver oil is not recommended because it is lower in omega-3 fatty acids and large doses may provide too much vitamin A.
Some types of fish may be contaminated with mercury and PCBs, but when fish oil supplements are prepared, these dangerous elements are removed.