The two major types of essential fatty acids required by your body include omega-3 and omega-6 fatty acids. These types of fatty acids, also commonly referred to as fish oil, may help to lower high triglyceride levels, which can help to protect you against developing heart disease, MedlinePlus explains. Talk with your physician about the side effects of omega-3 and omega-6 fatty acids before beginning treatment with these supplements.
Stomach Discomfort
Taking omega-3 or omega-6 fatty acid supplements may cause stomach irritation. Stomach irritation may lead to side effects of nausea or heartburn, which may cause a temporary decrease in your appetite. Heartburn may result in additional side effects, such as chest pain, sore throat or difficulty swallowing. If you experience sudden or severe chest pain for any reason, seek prompt medical care. This side effect of omega-3 and omega-6 fatty acid supplements may also be a sign of a heart attack.
Burping or Bad Breath
Excess gas may accumulate in your stomach or intestinal tract as a side effect of taking these types of fatty acid supplement. You may belch more frequently than usual or you may notice that your breath emits an unpleasant, fish-like odor, MedlinePlus warns. Seek additional care from your doctor if you find these side effects of omega-3 and omega-6 fatty acid supplements to be bothersome.
Diarrhea
You may experience diarrhea after taking a dose of one of these fatty acid supplements. Diarrhea typically results in urgent, frequent bowel movements that produce loose or watery stools. Recurrent bowel movement urges may also contribute to abdominal cramping, fullness or pain.
Seizures
If you have any type of seizure disorder, do not take omega-6 supplements. This type of fatty acid may cause seizures in certain people, the University of Maryland Medical Center warns. Contact your medical provider if you experience seizure symptoms, such as involuntary body spasms or loss of consciousness while taking omega-6 fatty acid supplements.
Nosebleed
Treatment with omega-3 supplements may increase your risk of experiencing a nosebleed, the UMMC reports. Any type of unusual bleeding or bruising should be discussed with your primary care physician.
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