Duck liver is one of the most nutrient-dense foods you can eat. A 100-gram serving delivers extraordinary amounts of vitamin A, vitamin B12, iron, and copper, far exceeding what you’d get from muscle meats or most other whole foods. For most people, eating it occasionally is a smart nutritional choice, though its extreme vitamin A concentration means daily consumption isn’t a good idea.
What’s in 100 Grams of Duck Liver
The numbers are striking. A 100-gram portion of duck liver contains roughly 11,984 micrograms of vitamin A (over 13 times the recommended daily amount for adults), 54 micrograms of vitamin B12 (more than 20 times the daily recommendation), 31 milligrams of iron (well over 100% of most people’s daily needs), 6 milligrams of copper, and 67 micrograms of selenium. It also provides a meaningful amount of choline, a nutrient involved in producing acetylcholine, a chemical messenger that supports learning, memory, and other cognitive functions.
For comparison, a typical serving of duck liver is closer to 50 grams, which still delivers several times your daily requirement of vitamin A and B12 in a single sitting.
A Powerful Source of Absorbable Iron
Not all iron is created equal. Duck liver contains heme iron, the form found exclusively in animal products. Your body absorbs 25 to 30% of the iron from organ meats, compared to just 7 to 9% from green leafy vegetables, 4% from grains, and 2% from dried legumes. Even when a plant food looks iron-rich on a nutrition label, your intestines pull far less of it into your bloodstream because plant compounds interfere with absorption.
This makes duck liver particularly valuable for people prone to iron deficiency, including women with heavy periods, endurance athletes, and those recovering from blood loss. A single small serving can contribute more usable iron than a large bowl of spinach.
Vitamin A: The Biggest Benefit and Biggest Risk
The vitamin A in duck liver comes as retinol, the preformed version your body can use immediately without conversion. Retinol supports your immune system by maintaining the barriers that line your respiratory and intestinal tracts. It promotes the proliferation and maturation of the cells in those linings and helps produce tight junction proteins that keep pathogens from slipping through gaps. It also has antioxidant properties that protect these barrier cells from damage.
The catch is that retinol is fat-soluble, meaning your body stores excess amounts rather than flushing them out. The recommended daily intake for adults is 700 to 900 micrograms. Toxicity generally requires sustained intake above about 12,000 micrograms per day, but even a small serving of duck liver can exceed the daily recommendation many times over. Hypervitaminosis A from dietary sources typically requires extraordinary, repeated intake (think daily liver consumption over weeks or months), not the occasional serving. Still, this is the main reason to treat duck liver as a weekly or occasional food rather than a daily staple.
Pregnant women should be especially cautious, as excessive preformed vitamin A is linked to birth defects. If you’re pregnant or planning to become pregnant, discuss organ meat consumption with your care provider.
Cholesterol and Heart Health
A single whole raw duck liver (about 44 grams) contains roughly 227 milligrams of cholesterol, which approaches the amount in a large egg. However, the saturated fat content is surprisingly low at just 0.63 grams per liver, with 0.31 grams of monounsaturated fat. Duck liver is not the fatty indulgence many people assume it to be.
For most people, dietary cholesterol has a modest effect on blood cholesterol levels compared to saturated fat intake. Since duck liver is low in saturated fat, the cholesterol number alone isn’t a strong reason to avoid it. That said, if you have familial hypercholesterolemia or your doctor has specifically advised limiting dietary cholesterol, factor these numbers into your planning.
Regular Duck Liver vs. Foie Gras
Foie gras comes from ducks (or geese) whose livers have been deliberately fattened through a feeding process. The result is a dramatically different food. A single ounce (28 grams) of foie gras pâté contains about 130 calories and 12 grams of fat, making it far richer than standard duck liver. Regular duck liver is relatively lean, while foie gras is essentially a fat-delivery vehicle that happens to also carry vitamins and minerals.
If your goal is nutritional density without excess calories, standard duck liver is the better choice. Foie gras still delivers impressive B12 (111% of the daily value per ounce), vitamin A, copper, and iron, but it packs those nutrients into a much higher calorie and fat load.
Who Should Limit or Avoid Duck Liver
People with gout or high uric acid levels should be careful. All organ meats, including liver, are high in purines. Your body breaks purines down into uric acid, and when levels get too high, crystals can form in your joints and trigger gout flares. The Cleveland Clinic lists liver among the foods to avoid on a low-purine diet.
Anyone already taking vitamin A supplements should account for the massive dose that duck liver provides. Combining supplements with frequent liver consumption is the most realistic path to toxicity from food sources. People with existing liver disease may also be more vulnerable to vitamin A accumulation, since the liver is where retinol is stored and processed.
How Often to Eat It
Once or twice a week in modest portions (around 50 to 75 grams) gives you a substantial nutritional boost without pushing vitamin A into risky territory. This frequency lets you benefit from the iron, B12, copper, and selenium while allowing your body to process and use the retinol rather than accumulate dangerous levels. Pairing duck liver with vegetables or whole grains rounds out the meal and adds fiber, which organ meats lack entirely.
Cooking method matters less for nutrition than you might think. Pan-searing, braising, or making a simple pâté at home all preserve the key nutrients. What matters most is portion size and frequency.