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Lupini beans are the large, flat, yellow seeds of the lupin plant, a legume that the FDA describes as a traditional food in Mediterranean cuisine and a member of the same plant family as peanuts. In the US they are usually sold ready to eat in jars of brine. In USDA FoodData Central SR Legacy data, one cup of boiled lupin beans has about 198 calories, 26 grams of protein and 16 grams of carbohydrate, which makes them unusually high in protein and low in carbohydrate for a bean. They also come with two safety facts that ordinary beans do not: bitter lupin seeds must be properly debittered, and lupin allergy can occur, especially in people allergic to peanuts. Below are the lupini beans nutrition facts, the evidence on both safety issues and how to read a jar label.
Peptide Labs does not sell lupini beans or lupin products. This article is general nutrition information, not medical advice.
Key Takeaways
- Lupini, lupin beans and lupine beans are names for the seeds of Lupinus plants, a legume in the same family as peanuts.
- One cup of boiled lupin beans (166 g) has about 198 calories, 26 grams of protein and 16 grams of carbohydrate in USDA data.
- Raw bitter lupin seeds contain alkaloids; a 2025 review of 33 poisoning cases traced every one to seeds that were not properly debittered.
- The FDA warns that people allergic to peanuts may also react to lupin, sometimes severely, and US law does not require lupin to be labeled as an allergen.
- Jarred lupini are sold already debittered; check the label for sodium and allergen information.
What are lupini beans?
Lupin, also spelled lupine, is a legume eaten in parts of Europe and Asia, according to the FDA, and in the Andes, home of Andean lupin. The FDA notes that lupin beans are eaten whole and are also made into lupin flour and lupin protein, which turn up in baked goods and pasta, especially gluten-free products. The pickled, brined snack sold in jars is the form most US shoppers know as lupini beans, often eaten by popping the bean out of its tough skin.
Lupin seeds naturally contain bitter compounds called quinolizidine alkaloids. Plant breeders have developed low-alkaloid sweet lupin varieties, and a 2017 review in Frontiers in Plant Science explains the trade-off: sweet cultivars are less resistant to pests and disease than bitter wild types. Bitter varieties are still grown and eaten, but only after a long soaking and rinsing process that removes most of the alkaloids. In 2019 the European Food Safety Authority published a scientific opinion on these alkaloids in lupins and lupin-derived foods.
Lupini beans nutrition facts (USDA)
USDA SR Legacy lists lupins raw, boiled without salt and boiled with salt. It has no entry for brined jarred lupini, so check the Nutrition Facts label on the jar for sodium. The table compares boiled lupins with the white bean entry used for cannellini. %DV is based on the FDA Daily Values.
| USDA SR Legacy | Lupins, boiled, no salt, 1 cup (166 g, FDC 172424) | Lupins, boiled, no salt, per 100 g (FDC 172424) | White beans, boiled, no salt, per 100 g (FDC 175203) |
|---|---|---|---|
| Calories | 198 | 119 | 139 |
| Protein | 25.9 g (52% DV) | 15.6 g (31% DV) | 9.7 g (19% DV) |
| Fat | 4.9 g (6% DV) | 2.9 g (4% DV) | 0.35 g (0% DV) |
| Carbohydrate | 16.4 g (6% DV) | 9.9 g (4% DV) | 25.1 g (9% DV) |
| Fiber | 4.7 g (17% DV) | 2.8 g (10% DV) | 6.3 g (23% DV) |
| Manganese | 1.12 mg (49% DV) | 0.68 mg (29% DV) | 0.64 mg (28% DV) |
| Copper | 0.38 mg (43% DV) | 0.23 mg (26% DV) | 0.29 mg (32% DV) |
| Magnesium | 90 mg (21% DV) | 54 mg (13% DV) | 63 mg (15% DV) |
| Zinc | 2.3 mg (21% DV) | 1.4 mg (13% DV) | 1.4 mg (13% DV) |
| Folate | 98 mcg DFE (24% DV) | 59 mcg DFE (15% DV) | 81 mcg DFE (20% DV) |
| Iron | 2.0 mg (11% DV) | 1.2 mg (7% DV) | 3.7 mg (21% DV) |
| Potassium | 407 mg (9% DV) | 245 mg (5% DV) | 561 mg (12% DV) |
| Sodium | 7 mg (0% DV) | 4 mg (0% DV) | 6 mg (0% DV) |
In USDA data, boiled lupins have roughly 60% more protein and less than half the carbohydrate of boiled white beans per 100 grams, with a little more fat. That is why lupini show up on low-carb food lists and next to edamame and tofu among higher-protein plant foods; our high-protein foods list has more comparisons. One caution on fiber: USDA’s raw lupin entry lists 18.9 grams per 100 grams, while the boiled entry lists only 2.8 grams, far less than water uptake alone would explain. Read the boiled fiber figure as uncertain and look at the jar label, which reflects the product you are holding.
Are lupini beans healthy?
Properly prepared lupini are a protein-rich, low-sugar legume with useful amounts of manganese, copper, magnesium and zinc in USDA data, and they fit the bean-heavy eating pattern in our Mediterranean diet guide. Research on lupin protein and health outcomes in people is limited and mostly short-term, so this article does not make claims beyond the nutrient profile. Three practical points matter more than any single nutrient:
- Sodium: brined lupini can be salty. Rinsing helps, and our low-sodium foods guide explains how to read sodium on a label.
- Gluten: plain lupin contains no gluten, which is why lupin flour appears in gluten-free products, but check labels for cross-contact if you avoid gluten for medical reasons.
- Digestion: like other legumes, lupini can cause gas; our low FODMAP diet guide covers legumes for people following that plan with a clinician.
Bitter lupin poisoning: why debittering matters
A 2025 review in Frontiers in Toxicology collected 27 published case reports describing 33 people poisoned by lupin beans between 1926 and 2022. Every case followed improper processing: seeds that were not soaked and rinsed long enough at home, bitter seed varieties, or drinking the debittering water itself. The alkaloids block nerve signals in a pattern doctors call anticholinergic syndrome. The most frequent findings were dilated pupils, dry mouth and blurred vision, followed by lightheadedness and weakness. Children were affected more severely: of the six children described, three died. The species involved were white lupin (Lupinus albus) and Andean lupin (Lupinus mutabilis).
The same review notes that most lupin beans people eat come from supermarkets and are already debittered, which is why the authors see commercially processed beans as the safer choice over preparing dried bitter seeds at home. Two habits follow from that evidence:
- Choose lupini sold ready to eat, and do not drink or reuse the soaking water from dried lupin seeds.
- Discard any lupini that taste strongly bitter. If someone develops dilated pupils, dry mouth, blurred vision or confusion after eating lupin beans, call the Poison Help line at 1-800-222-1222 or seek emergency care, especially for a child.
Lupin allergy and peanut allergy
The FDA warns that people who are allergic to peanuts may also react to lupin, because the two are in the same plant family, and that these reactions can be severe and life-threatening. Some people react to lupin without having a peanut allergy, but the FDA says people with peanut allergies are most at risk. In Europe, lupin is recognized as a potential allergen and labeled as such.
In the US, lupin is not one of the nine major food allergens that must be declared under federal allergen labeling law, so the FDA advises checking the ingredient list for lupin by name. That matters most for gluten-free breads, pastas and baked goods, where lupin flour or lupin protein may be used. Anyone with a peanut allergy who wants to try lupini should ask their allergist first, and hives, swelling, wheezing or trouble breathing after eating need emergency care. Our elimination diet guide explains why food reactions should be worked out with a clinician.
How to choose and enjoy lupini beans
Look for jars or vacuum packs labeled ready to eat, and compare the sodium line on the Nutrition Facts panel between brands. Many people rinse jarred lupini, then nibble a slit in the skin and squeeze the bean out; others eat them skin on. They are served as a salty snack with olives, tossed into salads and grain bowls, or blended into dips the way chickpeas are used for hummus. For a softer white bean with no debittering step, see our cannellini beans guide.
Frequently Asked Questions
Are lupin beans the same as lupini beans?
Yes. Lupini, lupin beans and lupine beans all refer to the seeds of Lupinus plants. Lupini is the Italian name commonly used on US jars.
Are lupini beans healthy?
In USDA data a cup of boiled lupins has about 26 grams of protein and 16 grams of carbohydrate, with useful manganese, copper and magnesium. Jarred versions can be high in sodium, so check the label.
Why are lupini beans bitter?
Lupin seeds contain bitter quinolizidine alkaloids. Commercial lupini are soaked and rinsed to remove most of them. Strongly bitter beans have not been debittered properly and should be thrown away.
Can you have a lupin allergy without a peanut allergy?
Yes. The FDA says some people react to lupin even if they are not allergic to peanuts, although people with peanut allergies are most at risk.
Do food labels have to list lupin as an allergen?
Not in the US. Lupin is not one of the nine major allergens, so it appears only in the ingredient list. In Europe it is labeled as an allergen.
Are lupini beans gluten free?
Plain lupin beans contain no gluten, and lupin flour is often used in gluten-free products. Check the label for cross-contact statements.
Questions about a label? Contact us or read our Buyer’s Guide. Food comes first; follow the label and ask a healthcare provider before starting a supplement, especially if you take medicines, are pregnant or have a food allergy. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Last reviewed October 2026.
Related guides: Cannellini Beans: Nutrition, Benefits and Cooking Safety, Chickpeas: USDA Nutrition, Protein, Fiber and Canned vs Dried, High Protein Foods: USDA Values for Meat, Dairy and Plant Sources.