Omega-3 Fish Oil Side Effects

Omega-3 fish oils taken in high doses can cause side effects. Because fish oil supplements are not FDA regulated, it is not always possible to know the exact effect of omega 3-fish oils. Interaction with prescribed medications can also lead to side effects. Individuals with underlying health problems may be more susceptible to side effects of omega-3 fish oils.

Allergy

Taking fish oil supplements can lead to allergic reaction in individuals who are sensitive to fish. Avoidance of fish oil supplements is important for anyone who has developed a skin rash after consuming fish of any kind.

Bleeding

Omega-3 fish oils can increase the risk of bleeding. At lower doses, bleeding risk as a side effect of fish oil is minimal. Taken in high doses, fish oils can lead to hemorrhage and increase the risk of hemorrhagic stroke. Fish oils prevent blood clots. Nosebleed and blood in the urine are associated with higher doses of omega-3 fish oils and may be seen as a side effect. If frequent nosebleeds occur or blood in the urine is present, an exam from your physician is warranted.

Gastrointestinal Upset

Omega-3 fish oils are notoriously known for their side effect of gastrointestinal symptoms that include heartburn and indigestion. Bloating and belching are frequent and unwelcome side effects that are usually associated with taking omega-3 fish oil supplements. In high doses omega-3 fish oils can cause diarrhea that can be severe in some instances. A fishy aftertaste from omega-3 fish oils is common.

Low Blood Pressure

Omega-3 fish oils cause small drops in blood pressure. Individuals who suffer from hypotension--low blood pressure--may need to be especially cautious of the potential for lower blood pressure as a side effect of omega-3 fish oils. Blood pressure-lowering medications, combined with omega-3 fish oils, mandate caution.

Vitamin E Deficiency

Omega-3 fish oils can lead to vitamin E deficiency when taken over a period of months. Over-the-counter fish oil supplements usually contain vitamin E because of the potential for deficiency. Combining other products with vitamin E, a fat soluble vitamin, could lead to elevated levels. Side effects of omega-3 fish oils are rare, and primarily occur in high doses. Lack of FDA regulation for omega-3 fish oils increases the possibility of side effects.