Omega-3 Supplement Side Effects: Common Concerns, Precautions, and Safety Tips

Omega 3 supplements are used by many people to increase their intake of essential fatty acids. EPA and DHA levels are different in fish oil, cod liver oil and algal oil. These fats are essential for good health and can help fill in diet gaps if it's low in them.

Omega-3 supplements are generally safe to take, but there are some side effects that can occur. Reactions may be related to the product, the amount and a person's health. It's important to first be aware of the common side effects, potential drug interactions of regularly taking one, and simple precautions of taking it.

What are the side effects of omega-3 supplements?

Omega-3 supplements in high amounts can lead to gastrointestinal upset. Some people experience feelings of nausea, diarrhea, mild abdominal pain or indigestion with fish oil. Combining in large doses or taking a product that is unsuitable for them may make these symptoms more apparent.

Some will get flatulence or aftertaste of fish. This can be early on in the process or later, depending on when the person takes the capsule, how long the supplement has been on the shelf, and the individual's tolerance.

Other individuals find that taking omega-3 supplements with food helps them to digest the supplement better. Do not exceed manufacturer's servings. If the product continues to have an undesirable effect, consult a health care professional and find a different product to use – do not use without advice.

Omega-3 safety is a matter of dose. High doses could increase the risk of side effects, and high dose supplements should not be taken for recreational purposes. These doses have also been associated with an increased risk of developing atrial fibrillation (AF), an abnormal heart rhythm, in some individuals, primarily those who have cardiovascular risk factors. Again, omega-3 is not necessarily going to have a rhythm effect on everyone, but high doses should be taken under medical supervision.

Allergies require care. Not all seafood or fish based supplements are safe to take if you are allergic to fish or seafood. There are many types of fish oil products, and those with a known allergy must check with a professional before using a fish oil product. Algal oil may be another option depending upon the allergy and the product's ingredients.

Some of the side effects are minor and others require urgent medical attention. If breathing becomes difficult, face and throat swelling or any other serious allergic response, it's a medical emergency. If symptoms persist or get worse, contact a healthcare professional.

Who Should Take Precautions When Using Omega-3 Supplements?

Omega-3 supplements should not be used by individuals who are using anticoagulant or antiplatelet drugs unless they discuss this use with their prescribing health care provider. In certain situations, high doses can have an impact on bleeding and people taking other drugs that affect the blood clotting process should seek medical advice before using this product.

Persons who suffer from heart disease or have a history of cardiac arrhythmia or any serious disease should inquire about the safety of the supplement. It depends on their health, the medications they use and the dosage they intend to use.

Women who are pregnant or breastfeeding might require more omega-3s, particularly DHA, to support fetal and infant brain and eye development. Some supplements, like cod liver oil, contain vitamins A and D too, therefore pregnant women should speak with their health care provider before taking a supplement containing vitamin A.

Product quality also impacts safety. Choose supplements that list the ingredients, list the quantity of EPA and DHA (and if available, give information about quality testing). Also note the expiration date and follow storage directions. Omega 3 oils can go rancid due to heat, light, and air.
The first question should be: Do you need a supplement? But if you already eat foods that are a good source of omega-3 fats regularly, you might already be getting enough. A supplement will make up a deficiency, but should not be used as an alternative to a balanced diet or any dietary supplement recommended by your doctor.

Check the EPA and DHA amounts before buying. The total fish oil amount on the front label does not tell the whole story. Use only the recommended serving size and follow the serving size guidelines on the label before taking another omega-3 product.

Omega-3 supplements can have a beneficial effect for some nutritional deficiencies but may not be suitable for everyone. Consider their possible side effects and interactions with your medications. If in any doubt, consult your health practitioner before incorporating them into your regimen.