What is the difference between forms of vitamin K2?
Learn about the different forms of vitamin K2 - MK-4 (synthetic) and MK-7 (natural, from natto). ConsumerLab's answer explains.
If you are taking fish oil for general cardiovascular health (as opposed to treatment for elevated triglycerides, for example), or because you think you might not be getting enough omega-3s from your diet, a single 1,000 mg softgel (providing about 300 mg EPA and 200 DHA) should be sufficient. This amount of EPA and DHA is roughly equivalent to the amount of omega-3s obtained from two servings of fish per week, as suggested by the American Heart Association. In fact, health agencies in some countries suggest that even half that amount may be adequate.
If you are taking fish oil for a specific health concern, a higher dose may be beneficial. Specific amounts for purposes such as the treatment of high triglycerides, improving mood, reducing anxiety, and even maintaining weight during chemotherapy, are listed in the ConsumerTips section of the Fish and Marine Oil Supplements Review. Be aware that there are safety concerns with high doses of fish oil, particularly a risk of bleeding and immune suppression (see the Concerns and Cautions section of the Review). The Review includes our tests and comparisons of dozens of fish oil supplements.
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