Fish oil is 100% natural product and hence they don’t have any side effects but due to high consumption they may cause some problems. According to the recent survey experts found that excessive consumption of fish oil can lead to some fish oil side effects like Diarrhea. For individuals suffering from low blood pressure is recommended to consult a health expert or a doctor because fish oil is considered to lower the blood pressure. Over consumption of fish oil by low blood pressure patient may lead to side effects. There are lots more side effects of fish oil which you ca easily find online if you have any doubts or questions feel free to contact us.