Read the NIH omega-3 fact sheet before buying fish oil
Added
Aim to get omega-3s mainly from food, such as oily fish and other seafood, and read the NIH Office of Dietary Supplements fact sheet before adding a fish-oil pill. If you take a blood thinner, ask your doctor first.
The result
Result: NIH ODS: the American Heart Association recommends 1-2 servings of seafood a week and doesn't recommend omega-3 supplements for people without a high risk of cardiovascular disease; high doses may cause bleeding problems with warfarin or other anticoagulants.
Note: Not medical advice. Talk to your doctor or pharmacist before starting any supplement, especially if you take medications.
Source
NIH Office of Dietary Supplements (opens the original source in a new tab). Check it for the latest numbers before you act.