It is not new news that eating fish or taking fish oil in a supplement are a good thing. The benefits of fish oil supplements or simply eating fish are numerous. They range from improving overall cardiovascular health to helping treat many modern day ailments like ADD and dyslexia to actually improving cognitive ability such as memory and focus. The benefits simply outweigh the negatives. And this said, what are the negatives of taking a fish oil supplement? If you choose pharmaceutical grade fish oil, then there really aren’t many negatives other than burping and a little reflux. The reason why is because pharmaceutical grade version of oil actually will take most of the harmful toxins that are found in the fish itself making taking supplements better than actually including fish in your diet.