How Much Fish Oil Should I Take for Long-Term Use?

Fish oil is high in Omega-3 fatty acids.

How Much is Enough?

Over consumption of fish oil causes side effects of toxicity.

Fish oil in a supplement form (liquid, capsule or granulate) should not be consumed beyond 3 grams, unless suggested by a physician. According to Drugs Information Online, there are possible counter-effects of some prescription meds when taken with fish oil. If you are taking prescription drugs, consult with your physician before increasing your intake of Omega-3 fatty acids in any form.

Supplement vs. Food Form

Fish oil can be consumed in food form or as a supplement.

The American Heart Association suggests the consumption of two servings of "fatty fish" (salmon, cod, herring, sardines, tuna) preferably in food form per week, instead of high-mercury fish (shark, swordfish, king mackeral). Each serving should be approximately 3.5 ounces--cooked, or about ¾ cup of flaked fish. Comsumption of fish oil in food form minimizes the risk of over-consumption, which can lead to toxicity.

Bottom Line

According to Drugs.Com, over-consumption of fish oil can produce symptoms of fever, chills, stomach ache, and other flu-like symptoms. This typically occurs when fish oil has been consumed as both a whole food source and as a supplement over an extended period of time. Therefore, adhering to proper dosage is crucial. If taking long term, use "cod liver oil" instead of general "fish oil," owing the unknown origin and identity of the fish used in fish oil. Fish oil is typically derived from different fish types, even high-mercury fish.

References

• American Heart Association: Omega Fatty 3 Acids
• Drugs Information Online: Fish Oil