Common Side Effects Of Fish Oil


fish oil

Fish oil has been used extensively for treating conditions such as diabetes, depression, skin disorders, asthma, vision problems as well as certain forms of cancer. It is also used for preventing the occurrence of several conditions such as heart disease and cancer.

However, it is also known to cause certain side effects. Before using this supplement for preventing or treating this condition, you must seek medical approval from your physician. Given below is a list of common side effects that are associated with the use of fish oil.

The Disadvantages Of Fish Oil

Increased Bleeding

When consumed in high amounts, the omega-3 fatty acid in fish oil is known to promote bleeding as well as increase bleeding time. In addition to that, it prevents the clotting of blood. Bloody urine and nosebleeds are common symptoms that are associated with an overdose of this supplement.

bleeding due to fish oil

If you are prone to bruising or have a bleeding disease, it is highly recommended that you abstain from using this supplement. It is also important to note that if you take blood-thinning medications, it is highly recommended that you abstain from using this supplement.

Low Blood Pressure

Low blood pressure is a common side effect associated with the usage of fish oil supplements. While this side effect may actually prove beneficial for those suffering from high blood pressure, it may be detrimental for individuals suffering from low blood pressure.

low blood pressure

Those who suffer from low blood pressure or those who are taking blood pressure medications should avoid the use of this supplement. Several symptoms occur along with the side effect of low blood pressure and they include depression, thirst, deterred vision, nausea, dizziness and fainting.

High Blood Sugar

Fish oil supplements are also known to cause elevated blood sugar levels, which may prove detrimental for individuals suffering from diabetes. If a person suffering from diabetes has high levels of blood sugar, it may increase the risk of suffering from nerve damage, skin conditions and deterred vision. In certain cases, if the levels of blood sugar reach extreme levels, it may result in coma or even death. It is also important to note that this supplement may also interact with medications for lowering blood sugar levels.

Allergic Reaction

Individuals suffering from an allergic reaction to fish should avoid taking fish oil supplements as it may trigger allergic symptoms. Common indications of an allergy to fish include facial swelling, hampered breathing and hives.

allergy on eye

If you develop any of these symptoms after taking fish oil supplements, it is advisable that you consult your physician immediately and discontinue the use of such supplements.


Mercury as well as other toxic substances are often found in several fish and may be present in fish oil supplements as well. The FDA states that although individuals may reap the same benefits associated with the concentration of omega 3 fatty acids present in fish oil containing mercury, physicians around the world recommend consuming mercury free fish oil supplements. It is advisable that you only buy fish oil supplements from reputed companies.