Kirkland Signature Fish Oil 1000 mg Review
Kirkland Signature Omega-3 Fish Oil is presented on this Costco page as an easy and convenient way to help support a healthy heart. The product is sold as 400 softgels under item number 926628. According to the manufacturer, the fish oil supply comes from wild-caught ocean fish rather than farm-raised fish, and state-of-the-art purification processes are used to remove mercury. The page states that mercury is below the limit of 0.1 parts per million. Each serving provides 1000 mg of fish oil, including 250 mg of EPA and DHA omega-3, and the product is labeled as sustainably sourced and United States Pharmacopeia (USP) Verified. The page explains that the Omega-3 fatty acids EPA and DHA help support a healthy heart. It also notes that the American Heart Association recommends that healthy Americans consume two servings of fatty fish per week, providing about 1,750 to 3,500 mg of DHA and EPA, which is equivalent to a daily intake of 250 to 500 mg of the critical omega-3s. Supportive but not conclusive research is cited, stating that consumption of EPA and DHA omega-3 fatty acids may reduce the risk of coronary heart disease. Food sources listed include fatty fish such as salmon, mackerel, anchovies and sardines, while alpha-linolenic acid is described as found in flax, canola, soy, perilla, and walnut oils, with the body converting a low rate of it into EPA and DHA. Suggested use is one softgel taken two times daily with a full glass of water, preferably with a meal. The listed ingredients are fish oil, gelatin (porcine), glycerin, water, and tocopherols. The product contains fish, specifically mackerel, anchovy, menhaden, herring, and sardine. The label states no artificial colors, no artificial flavors, and no yeast or gluten. The specifications list the product as a gluten free softgel for adults in the heart health category. Caution advice asks pregnant or nursing people, or anyone taking medication or planning a medical procedure, to consult a doctor before use. The product should be kept out of reach of children and stored at room temperature, tightly closed, avoiding excessive heat. The USP verification section explains that the mark indicates the product contains the declared ingredients and amounts, does not contain harmful levels of specified contaminants such as heavy metals and pesticides, breaks down within a specified time, and complies with FDA Good Manufacturing Practices. The page also notes the statements have not been evaluated by the Food and Drug Administration and the product is not intended to diagnose, treat, cure, or prevent any disease. Shipping is approximately 3 to 5 business days, and the item ships in plain packaging. A satisfaction guarantee offers a refund if the buyer is not completely satisfied.
Study, Trial or Testing Result SummaryMembersHuman studies
2 of these 107 human studies gave the ingredient by drip, not by mouth.
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Supplement FactsFish Oil 1000 mg · Omega-3 Fatty Acids 250 mg · Other Omega-3 Fatty Acids 50 mg
| Total Fat | 1 g | 1.0% |
| Cholesterol | 10 mg | 3.0% |
| Fish Oil | 1,000 mg | † |
| Omega-3 Fatty Acids (EPA+DHA) | 250 mg | † |
| Other Omega-3 Fatty Acids | 50 mg | † |
Other ingredients: Fish Oil, Gelatin (Porcine), Glycerin, Water, Tocopherols.
Directions: Take one (1) softgel two times daily with a full glass of water, preferably with a meal.
Barcode (UPC) 096619926626 · Label source: Costcobusinessdelivery · Report a label change
Graded October 24, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.

