Many Americans take fish oil daily for heart-health benefits. Fish oil is now consumed more often than a daily multivitamin, according to a 2010 survey published by Consumerlab.com. It contains large amounts of two omega-3 fatty acids, Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). The body is unable to produce omega-3 fatty acids; food is the primary source of these essential fatty acids. Always discuss taking a dietary supplement with a medical professional. Though no prescription is required, the supplements have both positive and negative effects.
General Population
According to MedlinePlus, fish oil supplements are considered generally safe for the average American adult. This includes pregnant and breastfeeding women. The average recommended dose is 3 g per day, reports the University of Maryland Medical Center. There are no dosage recommendations for children. Always consult with your child's doctor before administering the supplement. Some infant formula's contain DHA because the essential fatty acid is beneficial for baby's brain and nerve development.
Heart Conditions
Patients who suffer from regular and severe angina, irregular heart rhythms and severe heart disease may suffer from severe side effects if taking fish oil, reports Harvard Medical School. The conditions may actually worsen if patient takes fish oil, according to recent studies, reports the school. Patients who have an implanted cardioverter-defibrillator, or ICD, are also advised to not consume fish oil.
Side Effects
Fish oil decreases the clotting time of blood and is a natural blood thinner. If you suffer from blood thinning conditions or take certain medications, you may increase your risk of bleeding. Blood thinning medications are also known as anticoagulant or antiplatelet drugs. Some examples of drugs affected by fish oil supplements include aspirin, clopidogrel, enoxaparin, heparin and warfarin. Increased bleeding leads to bruising of the skin, increased nosebleeds and possible risk of bleeding of the brain -- also known as a hemorrhagic stroke.
Herbs
Some herbal supplements, similar to anticoagulant medications, interfere with blood clotting time. Always discuss with your doctor what type of herbal supplements you are taking when considering consuming regular doses of fish oil. Herbs that may affect bleeding time include clove, garlic, ginger, willow and ginseng.
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