Side Effects of Fish Oil

* When taken in high doses, fish oil can increase the risk of bleeding. It can be in the form of nosebleeds, strokes and blood in the urine.
* Heavy metal and other pollutant poisoning is another risk related with fish oil. This is because mercury, dioxins and polychlorinated biphenyls (PCBs) are found in some species of fish.
* Upset stomach is another side effect of fish oil. With high does of fish oil, diarrhea can also take place.
* Incessant burping and fishy aftertaste are other side effects of fish oil consumption.
* Vitamin poisoning is another side effect of fish oil, as it contains certain vitamins, which when ingested in large quantities can be injurious to health.
* Heartburn and indigestion have also been seen as the side effects of fish oil.